We've certainly seen instances of intrabody communications at work, but now NTT DoCoMo is looking to join the fun and hopefully tie cellphones into the equation. Apparently, the firm has "various devices" in development that could utilize an "advanced handset" in certain forms of wearable electronics to give users the ability to unlock doors, make payments and exchange data with a friend with a simple touch. The prototype mobile packs a sensor produced by Kaiser Technology Company, and while the current version can only transmit data at 40-kilobytes per second, a speedier flavor is surely on the horizon. [Warning: Read link requires subscription]