Can electronic keys be managed centrally across multiple branches?

1. The column explains how electronic keys and smart lockers can be managed in an integrated way when operating multiple gyms, swimming pools and saunas.
2. Columnist Song Jeongsuk presents five checkpoints: where member information is stored, authentication methods, remote locker monitoring, networks and response to failures.
3. The column argues that it is realistic to keep existing equipment where it can be linked and to replace bottlenecks step by step, rather than replacing everything at once.

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