fairly simple DTMF decoder to control solenoid door unlocker and connected it to phone (in this case a cell phone). NOTE:CALLERID would save the phonecall as commented on the article
Inspired by Phil Haack’s article 19 Eponymous Laws of Software Development, Joey deVilla decided to collect laws, axioms and rules pertaining to mainstream software development and put them in a nice, easy-to-read table.