I'm a big fan of online banking, haven't stepped foot into a branch for months. But I've been reading about the banks starting to release these new devices for customers that use online banking... and I can't find much detail about them. An example here. Although my bank (Abbey) hasn't started using them yet, I'm concerned that these will become standard practice before the end of the decade. Does anyone use one of these? How do they work? Do they plug into your computer? Will they be Mac-compatible?