Automatic checkout

Ed Gottsman writes about RFID tags for ZDNet and sais it could eliminate check-out and just deduct the money from your VISA card as you leave the store. Don’t know about you, but I find way to often that stores overcharge me and don’t give the price as advertised unless I point it out for them. And this is with identifying technologies as barcodes. So I guess I won’t be the one cheering when my VISA bill is way larger then what it should be because I wasn’t able to say to anyone “now, look here, in your ad you say it costs this but you’re still charging me double”.