Norton Mobile Security Provides Remote Lock and Wipe, Malware Scanning for Android.

"After devising a passcode for locking and [wiping], Norton stashes them away, then watches for them to arrive via SMS. If you can't get your phone back and fear for the security of your Gmail or other data, SMS yourself with lock yourpassword, or wipe yourpassword, and so forth, and you're good to go. If you somehow fire off that command accidentally, you can set up two buddies in Norton's settings to have unlock capabilities from their phone numbers."