Detection of a transactional device

1. A terminal comprising:

communications elements configured to communicate with a personal device for carrying out transactions, called a transactional device, said communications elements comprising:

a first communications module comprising a reading interface for reading by contact, and

a second communications module comprising a contactless reading interface;

a detection module comprising:

at least one transactional device position sensor delivering a piece of data representing a position of a transactional device relative to said terminal; and

at least one control module controlling said first and second communications modules, said at least one control module activating said first communications module or said second communication module according to said piece of data representing said position of said transactional device.

2. The terminal according to claim 1 , wherein said sensor comprises at least one optical sensor.

3. The terminal according to claim 1 , wherein the terminal comprises a plurality of detection modules, each detection module comprising at least one sensor, which is adapted to the detection of the position of a transactional device according to predetermined constraints related to said first or second communications module with which said detection module is associated.

4. The terminal according to claim 3 , wherein each detection module of said plurality of detection modules is capable of controlling the first or second communications module associated with said detection module.

5. The terminal according to claim 1 , wherein the at least one transactional device position sensor of the detection module is associated with said second communications module and is positioned on a surface of a screen of said terminal.

6. The terminal according to claim 1 , wherein said first communications module comprises at least one of a magnetic read head or an interface of electrical contacts.

7. The terminal according to claim 1 , wherein said second communications module is compatible with at least any one of the following standards: ISO/CEI 18092, ISO/CEI 14443-1 to ISO/CEI 14443-4 and NDEF.

8. The terminal according to claim 1 , wherein said terminal is a payment terminal and said at least one control module can initiate an electronic transaction.

9. The terminal according to claim 1 , wherein said at least one control module enables a reduction or increase in electrical consumption of one of said communications modules.

10. The terminal according to claim 1 , wherein said at least one control module enables activating or stopping a module of said first and second communications modules.

11. The terminal of claim 1 , wherein:

the at least one transactional device position sensor delivers a piece of data representing the position of a transactional device relative to a first position associated with the first communications interface and a second position associated with the second communications interface.

12. The terminal of claim 11 , wherein the at least one transactional device position sensor comprises:

a first transactional device position sensor delivering a piece of data representing the position of the transactional device relative to the first position associated with the first communications interface; and

a second transactional device position sensor delivering a piece of data representing the position of the transactional device relative to the second position associated with the second communications interface.

13. A terminal comprising:

communications elements configured to communicate with a personal device for carrying out transactions, called a transactional device, said communications elements comprising:

a first communications module comprising a reading interface for reading by contact, and

a second communications module comprising a contactless reading interface;

a detection module comprising:

a first transactional device position sensor delivering a piece of data representing the position of the transactional device relative to the first position associated with the first communications interface; and

a second transactional device position sensor delivering a piece of data representing the position of the transactional device relative to the second position associated with second communications interface;

at least one control module controlling said first and second communications modules, said at least one control module activating said first communications module or said second communication module according to said pieces of data representing said position of said transactional device.