When most people picture thermal cameras, they imagine them being used by police or by military special forces. You may even be picturing FLIR (forward-looking infrared) cameras used aboard aircraft for detecting sources of heat on the ground. Whatever your preconceptions, thermal imaging actually has a huge range of uses in private industry. Contractors in particular can benefit greatly from this technology, and this is even more true now that thermal camera imaging systems are affordable for just about any budget.
About one hundred years ago, and a little further back, flowers were given in bouquets and nosegays, just as they are today. However, at that time, flowers were their own secret language. Each flower had (and still has) its own meaning. To give flowers to someone, you had to be very careful about what you "said" in order to avoid awkward and misconstrued intentions. You could easily say something wonderful or awful in a single bouquet.