The following policies should be considered by all hoteliers who do not have key-card lock systems:
1. Room keys must not have any form of tag which identifies the HOTEL OR key blank which is particularly unique among the surrounding area's hotels. No key tag at all is preferred.
2. Keys mustn't have the room number on them. Keys must be identified by a numeric or alpha code. That code cannot, in any way, directly correspond to the building or room numbers.