A bed includes a mattress having a core the core being one of at least two types. A control system is capable of automatically identifying the core type. In one variant, one core type is a bladder core type and another core type is a foam core type. The mattress may include a tag indicative of the core...http://www.google.com/patents/US7461425?utm_source=gb-gplus-sharePatent US7461425 - Bed with automatically identifiable mattress type
