Most common identity access systems are based on one of three principles - What Do You Have, What Do You Know, and Who Are You. "What Do You Have" refers to something a person carries, like a card or key. "What Do You Know" involves a passcode or PIN, while "Who Are You" requires some sort of physical evidence. Of these three, "Who Are You" is the most secure, and is what Euthissa is all about. The smart attendance system points to the same ineveitable truth - it's impossible for you to become someone else!

This immutable technology incorporates RFID card systems for verification, and can be programmed to trigger alarm systems. Therefore, it can never be limited only to schools.

Just as radio tunes in to different frequency to hear different channels, RFID tags and readers have to be tuned to the same frequency to communicate. RFID systems use many different frequencies, but generally the most common are low- (around 125 KHz), high- (13.56 MHz) and ultra-high frequency, or UHF (850-900 MHz). Radio waves behave differently at different frequency, so one has to make sure that they are choosing the right frequency for the right application.

RFID's use the low-end of the electromagnetic spectrum. The waves coming from readers are not dangerous and are safe for your child.