In 1950 he was employed a production planner at steel and ironware factory Christiania Staal & Jernvarefabrikk in Moss, Norway.
[3] In 1975 he launched the holecard based recodable keycard lock, where each new hotel guest could have his/her own unique key formed by a pattern of 32 holes in a plastic card.
The 32 holes in the key gave 4.2 billion combinations, the precise same number as the population of the earth at the time.
In 1975 Tor Sørnes launched the first recodable cardkey lock, the VingCard, which used a holecard plastic key.
He then led the development of and patented the electronic keycard lock, based on the magnetic stripe key.