I want a tool that makes a mechanic remember to do the right thing. I have a client who had an emergency call on his process chiller. Hundreds of thousands on product were at stake. Had a mechanic who knew the job, was nearby and reliable. Called him to service the chiller, and asked him to call the client to let him know when he got onsite to put him at ease. Three hours later I get yelled at because the mechanic wasnt there yet, but oh by the way the chiller fixed itself, dont bother coming. The mechanic was still on the roof, just never let anyone know he was there...all he had to do was call, that wouldve saved a lot of aggravation.