Prevent smart-lock failures with FMEA

Guests occasionally cannot enter even though the property uses automated smart-lock codes. FMEA: failure mode -> cause -> effect -> control The common trap is treating all access problems as the same glitch and adding only a generic backup instruction. Failure mode Name the specific way access can fail: dead battery, expired code, wrong door, jammed bolt, offline bridge, missing backup key. Specific modes prevent vague fixes because each access failure requires a different prevention or detection control. Effect Describe guest impact: lockout, unsafe wait, delayed check-in, support escalation, refund risk. Severity is based on the guest consequence, not how…

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