The hotel cardkey, invented because someone forgot to fix a lock
In 1978, guests at Atlanta’s Peachtree Plaza Hotel — seventy-three stories of reflective glass, the world’s tallest hotel at the time — were handed a room key made of plastic with a pattern of holes punched through it. It looked like a damaged IBM punch card. The metal room key, a technology barely changed since the Romans, had just been served its notice.
Tor Sørnes was a Norwegian engineer who spent his career at Christiania Staal & Jernvarefabrikk in Moss — a factory that made, among other things, locks under the “Ving” brand. He had been running the company’s R&D department since 1960. In November 1974 he had a specific problem in front of him.
On the eighth of that month, singer Connie Francis was attacked at knifepoint in her room at the Howard Johnson’s Lodge on Jericho Turnpike in New York, after a show at the nearby Westbury Music Fair. The assailant entered through a window with a broken latch the hotel had never repaired. Francis sued the chain and won a reported $2.5 million judgment. The verdict delivered a message across the industry: a broken lock was not a maintenance problem anymore; it was a courtroom.
Sørnes retreated to a small garden house over Christmas and developed the VingCard, launched in 1975. The key was a plastic card with 32 possible hole positions, yielding more than four billion unique combinations — roughly one for every person alive on Earth at the time, either a pleasing coincidence or proof that Sørnes thought very big. The clever part was recoding: when a guest checked out, a hotel clerk inserted a new template into the lock body, changing the combination it would accept. No locksmith. No new cylinder. No rekeying the floor after a key went missing.
The Peachtree Plaza’s 1,068 rooms received the system in 1978, the VingCard’s international debut. The hotel had been troubled by burglaries and was looking for a security fix that didn’t require managers to track a thousand metal keys. The holecard lock was patented in 29 countries and spread through the hospitality industry over the following decade.
The punched-card version was eventually succeeded by the magnetic stripe: VingCard introduced an electronic model in 1992 with a readable stripe on the back, recoded electronically rather than by swapping templates. It became the worldwide standard — the thin card that has since slid through hundreds of millions of hotel door readers.
Sørnes retired in 1992 and died in 2017 at 91. The lock and the key, a matched pair since the Egyptians had fixed one of each in wood several thousand years earlier, turned out not to need each other at all. The secret could live in a pattern — reset at will, issued fresh to every stranger who walked up to the front desk.
Sources
- Tor Sørnes — Wikipedia — biography, VingCard invention and launch (1975), Connie Francis connection, Peachtree Plaza deployment (1978).
- VingCard Elsafe — Wikipedia — holecard technical details, 1978 Atlanta installation, 1992–93 magnetic stripe transition.
- The VingCard — Lockforce Locksmith Services — holecard system summary, 1,068-room Peachtree Plaza deployment.