one box ADSL-WiFi and a WiFi finder

A while back I posted about one box Wifi solutions and noted the Linksys BEFDSR41W (no longer available, buy similar NetGear DG834G on on Amazon) which is an excellent solution to getting ADSL and WiFi at the same time. Dan later posted his first happy experience of home Wifi, which is a bit like my own - "my kitchen table is on the internet and the garden seat and the bed and…"
Coming in the other direction is the Kensington WiFi Finder, noted by Joi Ito. I have been looking for a device like this for ages, though it seems to not yet be in the shops. It is so much less hassle to get out a keyfob than a laptop, might be the discriminant for choosing your cafe, if only it could tell the free ones from the pay for access points.