Sometimes an idea or service comes along that seems either too good to be true, or too straightforward to have not been done yet. This was the case for RIoT, as we tried to finally clear our MWC backlog with a phone call to W-Locate – a company that uses a 5kB Java applet in a SIM card to provide location-based services. We had to ask why such a sensible idea hadn’t been done before. The appeal of the SIM card is that it is a platform-agnostic medium. As long as the device can use SMS messaging and has an antenna, W-Locate’s XimLoc application can send accurate positional information to a cloud platform using the cell towers of a participating…