My local flower shop had a paper card. For each 5 dollar he put a stamp on it. Same for my local cheese shop and my local pet shop.
But www.airmiles.co.uk certainly has a lot of software to manage their loyalty card.
I am looking into starting a loyalty card for a small local restaurant, I am not very familiar with the computer sofware field, much less the loyalty card. If anyone has any information on where to even start with this it would be a great help.