This is perhaps the first actually interesting sensor&#x2F;add-on I&#x27;ve seen for a phone.  I&#x27;m picturing myself running around the outside of my house looking for hot-spots to re-insulate and hence justify to my partner the purchase price of the device.  Or hot electronic components. Or playing a TSA creep and looking for ill people on public transport. What fun! (I hope other manufacturer&#x27;s race in to this market.)