[germanier]

At least for the last incarnation in 2013 Aldi Süd took offers from 14 companies, chose 8 which delivered a proof of concept, then chose 3 to fully implement the software which was then field tested for three months.

They also have full rights to the source code and in-house developers to do small changes.

The hardware is supplied by a different company that also has software on offer. But apparently that is not good enough.

[noir_lord]

I've maintained for years you can tell how well a shop/chain is run by how fast it processes your card, McDonald's are currently the fastest I've found generally with Aldi running a close second.

Seems logical that once people have selected what they want to buy you get them out the shop as fast as possible.