> With regards to the "spraying of bills", the bills themselves are usually in a safe, which is separated from the electronics (computer & peripherals). I used

> With regards to the "spraying of bills", the bills themselves are usually in a safe, which is separated from the electronics (computer & peripherals). I used to work in a supermarket with the 'self service' checkouts. The cash dispenser internals looks to be exactly the same as that in basic ATMs [0]. Without going into too many details, in our case the security was minimal and there was no tamper proofing. If you really wanted to get inside it wouldn't have been particularly hard. ATMs may by different as they are slightly more portable than a checkout though :) [0] http://gadgets.boingboing.net/2009/05/11/this-picture-of-an-a.html http://gadgets.boingboing.net/2009/05/11/this-picture-of-an-...