Device for protection against theft, corresponding method and computer program

1. An antitheft protection device of the type comprising an electronic antitheft element, the device being configured to protect at least one article in a self-service sale or being integrated in a basket or a box-type container, wherein the antitheft protection device comprises:

a storage memory storing relevant data;

a processor managing least two modes of operation comprising:

a configuration mode in which the device can receive the relevant data in the storage memory; and

a protection mode, in which said device protects said at least one article against theft, comprising a permanent locking sub-mode in which said device cancels out an attempt to implement another mode of operation;

an element for deactivating the electronic antitheft element controlled by said processor;

an energy supply powering said element for deactivating the electronic antitheft element; and

at least one communications interface for receiving a command to deactivate said electronic antitheft element, said command being processed by the processor.

2. The antitheft protection device according to claim 1 , wherein the device further comprises a contactless communications module.

3. The antitheft protection device according to claim 1 , wherein the relevant data belongs to the group consisting of:

data relating to at least one article;

data on a configuration of said device.

4. The antitheft protection device according to claim 1 , wherein the protection mode comprises a payment sub-mode in which the device carries out at least one part of a payment transaction using a payment element.

5. The antitheft protection device according to claim 1 , wherein the protection mode comprises an unlocking sub-mode in which said deactivating element deactivates the electronic antitheft element by using the processor.

6. The antitheft protection device according to claim 5 , wherein the unlocking mode is activated in at least two different ways:

upon reception of an unlocking command coming from the processor of the device, this unlocking command resulting from a payment made at least partly, by using the processor;

upon reception of an unlocking command coming from the processor of the device, this unlocking command resulting from a payment made by a system for managing a sales point within which the protection device is positioned.

7. The antitheft protection device according to claim 1 , wherein the device further comprises at least one piece of useful data intended for a consumer.

8. The antitheft protection device according to claim 1 , wherein the device is integrated into a basket.