Nowadays a number of Peoples are roaming around the roads so I developed this automatic system to monitor them without human eye.
Here is a very nice use of a sonar sensor and LCD - a parking sensor that can actually be useful.
To remind a patient to take his medication periodically, he just needs to pass his badge and verify his medication.
We want to keep the distance and avoid contact on the stairs. So we thought of a simple lightning system to control the visitor flow.
