Two years ago, Clark talked about a program starting in Seattle involving scanning fingerprints as a form of payment. People could use it at grocery stores and the like. CNET recently updated this development and it turns out that people loved it so much that it’s no longer an experiment. Thriftway stores started the service and customers are signing up for it by the dozens. It’s still a bit creepy to think our fingerprints and body parts can be scanned and tracked that easily. But we’ll see if it catches on in more places.