According to Australian Associated Press, some of the firefighters battling brush fires on the continent this summer are using a new wireless ingestable pill coupled with the Hidalgo‘s Equivital belt to watch their core body temperature and prevent heat related illnesses. 
Once swallowed, the Equivital EQ02 capsule transmits temperature readings to the Equivital belt that additionally measures pulse and respiration rate, as well as skin temperature. This is the same belt used by Felix Baumgartner in his brilliant Red Bull Stratos jump, which we we covered in a great interview with the medical team.
The Australian firefighters noticed heat related stress when operating in hot environments even when body surface temperature wasn’t terribly high, leading them to discover that core temperature goes up earlier than thought. The technology should certainly help firefighters focus on fighting fires rather than constantly watching for signs of heat stroke or rescuing their own comrades.
More from Australian Associated Press: Tiny pill joins the battle of the bushfires
Product page: Equivital…