To assure accountability of the emergency key left in Thumper's possession, here is a log of the key safe seal serial numbers as he is given them. Visual proof of the key's state here.
1871290 - Sealed 3/12/14
1871230 - Sealed 5/14/13 - Opened 3/6/14 so Thumper could travel.
1871226 - Sealed 4/24/13 - Opened on 5/11/13 after Thumper wussed out on a camping trip.
A005372 - Sealed 5/22/12 - Opened 4/24/13 due to Belle misplacing her key.
1871236 - Sealed 4/22/12 - Opened 5/22/12 due to Thumper misplacing Belle's key...again.
1871222 - Sealed 3/13/12 - Opened 4/21/12 due to Thumper losing Belle's key
1871269 - Sealed unknown - Opened 3/13/12 due to Thumper needing to take the device off for travel
Libéré en étant enfermé.