Quarterly Log Refresh
Scheduled return visits to add dated entries, replace worn tamper-evident tape, and update environmental readings for ongoing custody documentation.
Read detailsTamper-Evident Storage Logs
Cheongju · Since 2019
We visit homes and offices across Chungcheongbuk-do to photograph seals, note storage conditions, and produce tamper-evident logbooks that track every movement of your offline wallet materials.
Request a custody visit View flagship serviceWe record serial numbers, wax impressions, and tamper-evident tape states before anything moves. Each entry is dated and initialed in your bound log.
Humidity readings, drawer placement, and proximity to heat sources are written down. Paper backups fade differently from engraved steel—we note both.
When a backup shifts from a safe to a bank box, we add a chain-of-custody line. No digital sync—just ink, witness initials, and photographs.
Scheduled return visits to add dated entries, replace worn tamper-evident tape, and update environmental readings for ongoing custody documentation.
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A focused 45-minute visit to witness intact seals, update your existing custody log, and apply fresh tamper-evident tape when legitimate access has occurred.
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They photographed every corner of my fireproof box before re-sealing it. The log now shows three relocation entries—I wish I had called them before moving to Jeonju last year.— H.K., steel plate backup, Heungdeok-gu
The handwritten pages feel old-fashioned, which is exactly what I wanted. One minor note: the initial visit ran twenty minutes longer than quoted because my paper cards were in two separate envelopes.— S.M., laminated seed cards, Osong
How humidity, legibility, and re-sealing requirements differ between laminated paper cards and engraved steel capsules.

What lifted edges, colour shifts, and adhesive residue tell you during a quarterly seal inspection.
How to cross-reference log entries when paper lives in Cheongju and steel sits in a Daejeon family home.