Applied Digital Solutions (ADSX) is working on a tracking/monitoring system that runs off body heat.
Implants are just one step away.
"Almost" is such a vague term...
Suffice it to say that the wares touted via that outfit are not what a lot of people fear they are. Worldnetdaily spooked a lot of folks by harping on this stuff, but evidently they finally realized that sales hype -- backed by vague "concept" patents (that don't describe a device -- for very good reason) is something entirely different from real world applications.