Category Archive Technology

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How to Link AAADHAR NUMBER to Phone Number

November Update

It has become mandatory to link or attach your Aadhar Card Number your mobile phone number. Various telecom services like Wifi Dongles, Mobile Phone etc. that have SIM cards in them need verification of user.

By linking your mobile to your AADHAR CARD you will be able to verify your phone numbers. A biometric verification was also required alongwith phone number verification. This biometric verification was the finger print verification which was also provided at the time of AADHAR CARD application.

Banking Services and all Telecom services need AADHAR Verification. Users were facing a lot of difficulties in biometric verification. Scanners were not working well. Scanned Finger prints were required to be submitted to local SIM card retailers.

But there is a relief in the process. UIDAI has tweeted from their official profile that – “From December 1, 2017 there will be no need of providing your biometric information to local SIM card retailers. Users will be able to link the mobile numbers from the comfort of their home. Users will receive OTP on their mobile phone and they can enter the OTP to verify phone numbers.”

Last Date to Link your AADHAR CARD to mobile number is 6th of February 2018

How to Link AAADHAR NUMBER to Phone Number

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What is ReCaptcha ? Spam protection in web forms

Luis von Ahn is the founder of reCAPTCHA
Invented in 2003 to stop spamming on internet.

He is a professor and his research includes CAPTCHAs and Human Computation.

Meaning of Captcha is –

Completely Automated Public Turing test to tell Computers and Humans Apart.

What is a Turing Test ?

Turing test – is a test of a machine’s ability to exhibit intelligent behavior  equivalent to, or indistinguishable from, that of a human.

When millions of people started solving reCaptcha, their founders started thinking about applying the power of human brain for something more useful.
They decided to use it for scanning and converting old books to digital books

This Project Was Named reCaptcha and its slogan was – “Stop Spam and Read Books

In the year 2009 Google Acquired Recaptcha to use its digitizing power and converting old books and
news papers to digital.

Power of computers is increasing at a rapid rate and some bot programs were able to solve these CAPTCHA images.

Hence a new and improved reCAPTCHA was introduced which was called as No Captcha reCAPTCHA.
CAPTCHA Images were imposiible to be solved by blind people.
CAPTCHA Images for also super annoying for dyslexic people.

We have prepared a video presentation on reCaptcha as well :

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  Pir based lighting control from Slidescope

PROJECT PRESENTATION ON PIR BASED LIGHTING CONTROL Presented By Engineering Students from Greater Noida Uploaded by –

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Power Line Communication

Presentation by Engineering Students on Power Line Communication

Power line communication from Ankit Srivastava


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Colorstech Enterprises

This presentation is useful for companies looking for Energy Consulting Services, Electrical Engineering and Manufacturing Services in the field of Electronics and Electrical Technology.