This app validates barcode of a ticket at an event against the web-service and displays the result if it is allowed to pass or not.
It was initially developed for the v-Ticket ticketing system, but will work just as fine with any other ticketing service that will comply to the same API.
You will need an external barcode reading hardware for this app to work. Currently the app supports all scanners made by Inifinite Peripherals: Linea Pro 5, Linea Pro 6, etc.
Future versions will support other manufacturers hardware as well as built-in camera readings, so stay tuned.