| CPC G07C 9/29 (2020.01) [G06K 7/1417 (2013.01); G07C 9/33 (2020.01)] | 9 Claims |

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1. A method for controlling access to a physical resource of an industrial site by a lockable and unlockable blocking device of a padlock type, comprising:
locking and unlocking said blocking device, comprising comparing an access code transmitted by a first individual device as a mobile telecommunication terminal, a badge or a digital key and a second individual device as a mobile telecommunication terminal or computer with an access code associated with a first agent who has locked the blocking device, and
padlocking said blocking device by a set of second individual devices,
wherein the unlocking of said blocking device is performed by each of the second individual devices of the set of second individual devices.
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