I think I am going to use BVC. What I would like is for ahp to be able to distinguish when me pr my wife gets home and have personal settings for each of us. Temperature settings, music , lights and the like; all personilzed for both of us.
Well determinding that someone is entering the home isn't so difficult. I guess what you will need to to figure out a way to let your HA system know which one of you it is.
One well know way is parking detectors. Say, if you always park on the left in the garage, and your spouse parks on the right (or the spouse uses the garage and you park outside). Pressure switches (you know, the hoses, just like gas stations used to use), can tell AHP who is home, and who just arrived. It's a little more complicated than it may sound.. but well known... and also totally useless if you live in a high-rise condo, or use public transportation.
Another method, is simple motion detectors, and conditional macros, based on time, and days of the week.
I have a bluetooth enabled cell phone (and so does the wife). I also have a dongle: a bluetooth device that plugs into a USB of a PC, that can tell which cell phone (therefore person) has/is within range (arrived/is home). However... I have yet to find a software product that will allow me to share that info with BVC or AHP.