Refreshable Braille Display


Refreshable Braille Display

DotBook is a Feature-packed yet Affordable Refreshable Braille Display, designed to enable easy access to Digital Content for people with Visual Impairment. It provides ‘line by line’ output through a Tactile Interface (Braille Cells), thereby streamlining the procedure of reading, writing & managing digital content. Based on Visually-impaired Users’ interaction with the system at every stage of development including problem identification, design feedback, and prototype validation, DotBook’s design is very refined, making it one of the most Feature-packed, User-friendly and Cost-effective Refreshable Braille Devices in the World.

DotBook is armed with AM335x 1GHz ARM Cortex-A8 high processing speed processors and powered by inbuilt rechargeable batteries. It supports Bluetooth/USB/ Wi-Fi interface and can be connected with a multitude of devices such as computers and smartphone. This standalone and portable device with a user-centric and ergonomic design, aims to create true empowerment for people with Visual Impairment, be it at School, at Work or during Leisure.

The 40-Cell Variant, DotBook 40Q comes with a QWERTY Keyboard which acts as a plus point for Users who have gotten used to using standard laptops and computers and are comfortable with the QWERTY Format for input. This can be converted at any time to a Perkins input method, for Users who prefer the Classic Perkins setup. The DotBook alternatively comes in a smaller 20-Cell Variant, DotBook 20P, with Perkins Keys for Input and many other smart features.


Touching Lives

Technology & Features

File Manager

Create, Browse and Manage Files using the File Manager

Web Browser

Stay level with the competition, with a Speedy Web Browser


View, Create, Send & Manage e-mails with ease using DotBook

Word Processor

Read & edit .doc &.txt files using Notepad & Word Processor

Screen Readers

Braille Back: Anroid OS NVDA: Windows PC & Laptops

e-Book Manager

Search, Download & Read eBooks - .brf, .epub, .txt, .pdf files







Dual Spacebar & Refined Handrest for those long days at work


Using Panning Thumb Keys


2 USB Ports, Micro SD Card, Micro USB, Bluetooth 4.0,  WiFi
Headphones & Stereo Audio Output.


DotBooks have 4GB Memory 
& host a slot for a Micro SD Card as well


DotBook comes packed with Smart Rotary Key for Mode Selection & Function Keys to bring out a brilliant User Experience

The World of Assistive Technology

chemical Analysis of Wine

To measure the quality of wine, KritiKal developed Machine Learning (ML) based algorithms to determine the origin/class of wines using chemical analysis.

machine learning in iot

The amazing variations in the number of connected devices are exploding, right from Smart Homes to Industrial Automation, Medical Devices to Wearable Technology.

intelligent mobility

The Automotive Revolution is growing stronger with each passing year and it seems like out-of-the-box concepts won’t take long to wield their magic on the turnpike.

Machine Displacement Measurement

KritiKal developed a vision system using Aruco Markers that tracks the displacement of washing machine. Find the details here.

Driving Simulator Data Card

The driving Simulator data card can be connected with the digital/analog & rotary encoder to monitor the sensor data.

Audio Tool

Audio Tool enables the developers to tag, store, organize, and label audio samples obtained from various projects.

Smart Crane System

Smart crane safety system reads sensor data and sends control signals to control the functionality of the crane.

face and mask detection system

An unique ATM Surveillance application that detects the Face and Mask of the person entering the ATM area. Read here.

Gerber PCB file

Gerber modification merges multiple PCB Gerber files into a single Gerber file connected through a string of flex cables.


Fog PASS is a GPS-enabled train pilot assistance system to combat against the blurring vision due to fog. Find the KritiKal innovation here!

truck recognition & tracking system

KritiKal developed a Vision-based truck recognition and classification system that detects and tracks vehicles at construction sites.

RFID & Biometric Based Access Control System that performs multiple security checks to secure the restricted area.

7 Reasons to Choose Custom Software Development Services for Business Growth

The advancement in Information technology has provided society with a plethora of benefits. Better user-experience, process automation, and process optimization are now the top priorities …

React Native for mobile app development

Learn what React Native is and why should you choose this for your next mobile app. React Native framework is used to build both Android and iOS platforms.

network clock

The Network Clock updates time through GPS time server to avoid any fluctuations or time-shifts, ensuring synchronized time without any delay.

Media Streaming Solution

Scalable Media Server Solution establishes & maintains the entire audio/video session during an online test. It handles end-to-end media audio-video streaming.

Free Data Sources for Machine Learning and AI

Curing diseases. Building advanced robotic prosthetic arms. Turning smart cities into safe cities. Revolutionizing analytics. These free data sources can help power your project.

LED Drivers

LED, a light emitting diode, is a two-lead semiconductor that has become a popular source of artificial light nowadays. In simple terms, it glows when electric current passes through it.

Crane Monitoring System

KritiKal built a safe load indicator unit using different sensors that monitor the system as per the configured safety limits and gather data of vital parameters.

KLiPR_Toll Audit

TRAZER Service enables smooth functioning of the toll management system. As it caters different traffic conditions, it delivers 99% accurate traffic data results.

annual day

KritiKal Solutions - a pioneer in Product Engineering, R&D, and Innovation recently celebrated 17 Years in Business on 5th August in Noida.

loyalty mobile app

Loyalty mobile app allows channel partners–distributors and resellers–to redeem their rewards on the go. It comes with features like Login and New Member Sign Up.

Facial Recognition and Its Powerful APIs

Just like fingerprint recognition, iris recognition, and voice recognition, Face Recognition is a biometric modality that is used for the purpose of secure authentication.

Best ML frameworks

Mobility is now, not limited to the basics; with the mix of Vision Technology & powerful Mobile Applications; Mobile has now become a window to the World.

KritiKal Solutions Inc. will be touring the USA this June - covering San Fransisco Bay Area, Los Angeles, Boston, New York, Princeton, and Chicago.

Cloud Vision

Cloud-Vision involves the processing & orchestration of Vision-based applications over cloud infrastructure. Cloud allows to pay for the resource usage with ease of scalability.

industry day

KritiKal Solutions recently attended the Industry-Academia meet-up held on 28th March at Delhi Technological University, Delhi. It was focused on Intelligent Transportation Systems.

Angular vs React

In web development world, JavaScript has gone mainstream with its ability to be used in frontend, backend, mobile applications, and even AI-based application development.

Computer Vision

Imagine fleets of firefighting drones sent into forest fires and navigate water delivery to stop fire outbreaks; A software that lets you try make up on the go.

latest iot trends 2019

Top 5 Emerging IoT Trends

In the IoT milieu, one can fathom about the deep investments, fueling innovations that are not limited to the Smart Home System but are expanding to large-scale Industrial Applications.


KritiKal attended the 11th Indian Conference on Computer Vision, Graphics and Image Processing, held at ISB Hyderabad Campus from 18 to 22 December 2018.

data capturing using ocr

One of the biggest challenges is, tackling piles of documents. With Optical Character Recognition, paper-based documents can be processed into digital form.

Healthcare Apps

Mobile technology shapes our future and health goals. Health-based apps have now become a norm to provide better care and health facilities anytime, anywhere.

ICTAI workshop 2019

KritiKal Solutions, a technology company, took part in the International Center for Transformative Artificial Intelligence (ICTAI) Workshop held at Bangalore on November 22, 2018.

The EMPOWER 2018 Conference showcased a variety of Assistive Technology Solutions, with a strong focus on empowering the Visually Impaired Community.

embedded vision

Embedded Vision combines Embedded Systems and Computer Vision to enable a machine to perform intelligent tasks. It can be used for a variety of applications.

16th Annual Day

KritiKal Solutions–a leading Product Engineering and Technology Consulting Company, recently celebrated 16 Years in Business on 3rd August at the Fortune Inn Grazia, Noida.

Applications of Artificial Intelligence

Being a hot trend not just among the tech circles, but the world beyond that as well, AI has dramatically made game-changing impacts in subtle yet sweeping ways.

smart parking system

Smart Parking Management System overcomes the parking challenges faced by various private & public facilities. It detects the total number of empty and filled parking bays.

native vs hybrid apps

It may be easier to embrace a Hybrid approach to build and maintain your mobile app but it’s unlikely that it will provide a great UX along with high performance.

Iot Internet Of Things

There are predictions that the next 2 years will bring 50 billion Connected Devices into the market, thanks to the smart devices that help businesses save time & cost.

smart helmet poc

The Smart Helmet System has in-built sensors that detect a crash and alert the family immediate contacts of the user with the
GPS coordinates of the incident.

iot world conference

Internet of Things World Conference is the largest IoT event in the world with over 13000 attendees, more than 300 global speakers and 200 sponsors and exhibitors.

Embedded Vision Systems

Industry 4.0 has helped bring automation to every phase from Procurement, Processing, Distribution of Raw Material to the Final Products.

guest lecture

IIT Delhi invited Mr. Piyush Bhargava (Principal Architect – Computer Vision & Image Processing – at KritiKal Solutions) as a guest speaker to deliver a lecture on Intelligent Transportation Systems (ITS).

Refreshable Braille Display

RBD is a powerful system, displaying characters using round-tipped pins raised through holes in a flat surface. It provides ‘line by line’ output of the digital content.

smart gate unit

Smart Gate Barrier Unit gathers data, broadcasts real-time barrier data/information to the central server through a desktop computer and generates alerts.

Machine Learning in healthcare

Advances in AI interfaces, predictive healthcare, and diagnostics all come down to the application of machine learning to help patients have access to smarter healthcare.

Eureka Interview

Prof M. BalaKrishnan spoke about the Inventions that he & his team came up with to make the Visually Impaired completely independent - on the Eureka Interview.

web development trends

As a web developer, you might be facing challenges to meet the evolving needs like - UI/UX, loading time, performance, scalability, cross-platform accessibility & security.


The NCVPRIPG 2017 was organized by the Multimedia Analytics and Systems Lab, Indian Institute of Technology Mandi in association with the Indian Unit for Pattern Recognition and Artificial Intelligence (IUPRAI).

Innovations in the Internet of Things, Sensory Capabilities and Advanced Mobile Applications are helping the entire ecosystem of Caregivers, Patients and the Healthcare Industry flourish.

Mosaicing of containers

The system performs selective mosaicing of frames captured by cameras, which are positioned to capture video of top and side view of the container. It also provides transaction logs.

Top Artificial Intelligence Technologies

AI is a high-paid industry involving major tech heavyweights, startups, and billions of dollars of investment to bring about a transformation that has been always imagined.

Toradex workshop

KritiKal Solutions successfully conducted Technology Workshop 2017 in partnership with Toradex on 22nd November to bring about a revolution in the embedded computing & vision.

Jharkhand Mining Show 2017

KritiKal Solutions, a leading product engineering company, attended the biggest confluence in mining– The Jharkhand Mining Show 2017, held at Ranchi, from 30th Oct to 1st Nov.

prototype launch

KritiKal Solutions, specializing in Embedded Systems & IoT, Computer Vision & Image Processing, attended the prototype launch event of 22Motors Pvt. Ltd, held at Gurgaon on 2nd November.

mobile apps-unprecedented growth

The mobile app industry is expecting a whopping growth, seeing no downturn in the foreseeable future. With so many inventions in the segment, the businesses are open to limitless possibilities.

IoT Congress

KritiKal Solutions, specialized in Embedded Systems and IoT, attended IoT India Congress–India's largest conclave on the Internet of Things, held at Bangalore, from September 14-15.

wide area surveillance

Wide Area Tracking Module solves vast area surveillance problem using a series of cameras with low common FOV's mounted atop a PTZ unit. It has target selection & controls.

GMV 2017

KritiKal attended the Global Mobile Vision (GMV) 2017 – Asia’s leading ICT industry exhibition & Business Event held at Korea International Exhibition Center in Seoul, South Korea

Stem detection

Stem Detection Module helps augmenting the strength of robot arm system to support its sole purpose of picking the bloomed-cotton from the plant.

elctronica conference

KritiKal concluded the successful participation at South Asia's and India's leading fair for electronic components, systems and applications, electronica & productonica India.

GMV 2017

KritiKal will be participating in the Global Mobile Vision 2017 Conference. This is the leading ICT industry exhibition & business meeting event in South Korea.

Order management

The order management application performs analytics for daily order generation against the available stock. It has an intuitive dashboard for the supply chain management process.

Technology in Cosmetics Industry

Technology has helped both the small and large companies to collate wide and relevant information about their customers which is very essential in the cosmetic industry.

ad recognition

Intelligent advertisement recognition engine analyzes advertisements and finds any new advertisements during the advertisement breaks. It supports integration with various modules.

iot in retail

Be it highly personalized shopping experiences or remote interactions with products, IoT is has become a real game-changer in the retail supply chain.

Change Detection

This indigenous software application with intuitive GUI helps Military Personnel perform Change Detection and Image Fusion Analysis on satellite images for various border applications.

15th annual day

KritiKal Solutions marked a successful journey of 15 years in business by celebrating their work anniversary last Friday i.e. 4th August at Mosaic Hotel Noida.

predictive maintenance app

The predictive maintenance mobile app predicts defects in the operation beds before they even occur. There could be multiple symptoms of failure in different scenarios.

SES 2017

KritiKal participated in 8th edition of Strategic Electronics Summit 2017 (SES 2017) organized by Electronics Industries Association of India (ELCINA) and held at Bengaluru.

javascript coding

It’s no secret that with every day, come new technology trends, tools and new programming methodologies, which create a lot of buzz amongst the techies.

transcoding for streaming

The meteoric rise of USB media streaming devices is the latest in a stream of landscape-changing technologies taking the Internet-of-Things market by storm.

DIIA conference

KritiKal attended the Regional Activator Conference organized by Defence Industry and Innovators Association (DIIA) at Bangalore on 8th July 2017 to uplift ‘Make In India’.

android app development banner

The most important reasons developers opt for Android are its popularity, discoverability, high reliability of Ad attribution, and cost effectiveness.

Collision 2017

KritiKal Solutions, a technology design house, recently attended Collision–America’s fastest-growing technology conference held at New Orleans from May 2- 4, 2017.

IndiaSoft 2017 Conference

Indiasoft 2017, was attended by over 400 overseas buyers from 60 countries and around 250 India-based Information and Communications Technology (ICT) firms.


KLiPR enables real-time identification of vehicles by capturing and analyzing a moving vehicle’s number plate using live camera feed. It helps in automatic traffic monitoring.

Automatic target recognition

ATS System performs detailed inspection of the panoramic frames being displayed on a cockpit’s multi-function display. It detects presence of the target from 10-20 kms range.

Cloud Vision

Cloud connector hardware system uploads the data to the client’s platform and ensures better monitoring & optimization of various parameters like pressure, temperature level.

Video Analytics

Leveraging Artificial Intelligence helps in analyzing massive amounts of surveillance video, which further optimizes municipal operations and improves resident’s quality of life.

electric vehicle charger

To cut down on greenhouse gas (GHG) emissions & capitalize on renewable energy adoption, countries are leaning towards massive adoption of electric vehicles.

smart inverter system

Smart Inverter System acts as a Smart Backup System for public facilities, workplaces, residential buildings. It offers an efficient way of battery charging.

machine learning apps

Every organisation today wants to get their hands-on customer data using Machine Learning Apps in order to track the data and give best possible results.

Wide Area Tracking

Transportation infrastructure is getting highly modernized with sensors making way for Wide Area Tracking to transcend the growth of the transport industry.

Electric Vehicle

KritiKal built a high voltage efficient charger that supports a universal voltage range. It comes in two variants- PFC controller-based & non-PFC controller-based charger.


Since DevOps has become the new norm and security becomes an ever-important part of modern day business, teams should focus on building security into DevOps practices.

Audio Analytics

Audio Analytics app synchronizes sound tracks in a theatre environment by matching original audio signature computed on the fly against recorded sound track in different languages.

South India facility

The new facility at the South India location is focusing on cutting-edge solutions in the areas of Embedded Systems & IoT, Computer Vision & Image Processing.

Benefits of Streaming Audio Over Streaming Video

In the good old days of file sharing, you had to sit around and wait, as the computer and internet connection took its dear time to download something.

mobile apps and iot

The futuristic aspect of IoT (Internet of Things) has created a stir in everyday life, but what fuels the development of IoT is the information gathered by mobile apps.

video streaming

Streaming services have taken over the Internet. Now searching the Internet for TV shows has become easier as streaming sites stream all of them just as they would on DVD.

smart city applications

Smart Cities are now becoming mainstream vehicles to support long-term economic growth and well-being of its inhabitants. It brings convenience and opportunities for the residents.

Human in the Loop in Machine Learning

Pure Machine Learning based systems tend to fall short in terms of accuracy. While, the combination of machine-driven classification with human-in-the-loop factor brings more accuracy.

collision conference

KritiKal will be attending the Collision Conference 2017. This is America’s fastest-growing technology conference with over 20,000 attendees from more than 110 countries.

electronics hardware

A customized electronics hardware system well-equipped with functions including PAL conversion, Serial data generation, BIST on Power on, 2D FTT and SNR calculation.

application erp

The ERP application comes with two main modules- web interface and ticketing interface to automate the entire human resource and project management functions.

connected cars

The term connected car is a mainstay in the vision for the future of automobiles and involves a broad range of concepts from internet connectivity to driverless mobility.

onboard system

OnBoard will make public transport more accessible and affordable for the visually impaired. It aids the user in identifying the bus-route number & then enables them to board the correct bus.

Mobile Vision

Mobile Vision technology works entirely on mobile. This not only helps companies interpret the visual world on the go, but also supports agility in the business model.

ISO certification

KritiKal Solutions is now an ISO/IEC 27001:2013 certified organization. The ISO/IEC 27000 family of standards helps organizations keep information assets secure.

Video Signal Processing

The Video Signal Processing Electronics System displays real-time video over various interfaces such as Camlink, USB, SMPTE292/259, RGB buffered & G component output, Ethernet.

aerial mosaicing

The Aerial Mosaicing system performs annotation- marking areas/points of intersection in the mosaic. It has two modes of operations- Automatic mode and Interactive mode.

Wireless Data Logger

Wireless Data Logger optimizes the energy meters located in commercial as well as residential units by reading data like energy consumption, load, voltage fluctuations.

indiasoft it show

KritiKal Solutions highlighted its hi-tech products & solutions such as TRAZER, KLiPR, Biometric services, Network Clock and others at the IndiaSoft IT Show.

Deep Learning

Deep learning is creating efficiencies in our power grids, gaining momentum across healthcare, augmenting agricultural productions & helping us in weather forecasting.

Internet of Things

IoT is a massive network of devices connected to the Internet. This includes anything ranging from jet engines to washing machines, coffee makers, wearables; anything that has built-in sensors.


KritiKal Solutions state-of-the-art real-time OCR based technology- KLiPR was featured in the Nov-Dec 2016 issue of the Global Manufacturing Technology (GMT).

GTCx conference

KritiKal recently attended the GTCx conference organized by NVIDIA in Mumbai to learn latest open-source Deep Learning SDKs, Developer Communities, and classifiers.

KLiPR at Manayata

KLiPR- our ANPR solution, is now installed at Manyata Technology Park in Bangalore. KLiPR is our real-time Optical Character Recognition (OCR) based vehicle monitoring system.

dnd flyway KLiPR

The DND Flyway has launched a mobile app called Easy Toll using KritiKal's Automatic License Plate Recogniton software- KLiPR to facilitate commuting and toll collection.

CES 2016

KritiKal will be in Las Vegas this January attending the Consumer Electronics Show! CES has been the showcase of consumer technology innovation since 1967.

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