Poke.me.uk

A simple system for allowing someone to notify you without giving out your personal information.

The idea came from Electric Vehicle (EV) charging. Some owners wanted a way to let other EV owners notify them that they needed to use a charging spot, without having to give out personal information like their mobile number.

But of course you may use this service for allowing others to notify you of any event by simply leaving your barcode somewhere for them to scan.