I totally agree provided Frank lives in some maximum-security apartment complex with armed guards. Otherwise I think you'd making a big deal out of nothing.
Anyone can get into a complex by following someone else in.
Or, in this case, just power the solenoid wire that is _already outside_ as the OP did.
Anyone can get into a complex by following someone else in.
Or, in this case, just power the solenoid wire that is _already outside_ as the OP did.