why not change the mobile chargers and laptop baterries from security clearance personnel while they're out ??? and plug in on a new replacing one, with an wifi regulator access microcontroller

Over the past year, the ESP8266 has been a growing star among IoT or WiFi-related projects. It’s an extremely cost-effective WiFi module, that – with a little extra effort – can be programmed just like any microcontroller. Unfortunately, the ESP8266 has mostly only been available in a tiny, modular form, which, with limited I/O and a funky pin-out, can be difficult to build a project around.