I haven't read the last 10-15 responses but why not do the old fashioned why and follow him from home a few days to see what he is doing.
How to Follow Someone Without Getting Caught - wikiHow
The only foul language was from one poster who always uses it. Don't see any insecurity from anyone - but I have just remembered this:
http://hongkong.geoexpat.com/forum/1...ead202045.html
See answer no 9 - who is insecure then???
In that case, wouldn't it have been simpler for jobin to ask "Is it easy for my neighbor to determine my visa status?" or "How confidential is my visa status?" instead of proposing the scenario that they did...?Original Post Deleted