Point-of-sale and automated teller machine transactions using trusted mobile access device

1. A method for a mobile communication device to conduct a transaction with an unattended point-of-transaction device, comprising:

establishing a secure wireless telecommunications link between the mobile communication device and an entity that manages the unattended point-of-transaction device;

transmitting, by the mobile communication device, confidential information over the link, the confidential information comprising information that establishes the authorization of the mobile communication device to interact with the unattended point-of-transaction device and information regarding an action the unattended point-of-transaction device is requested to perform in conducting the transaction, wherein the action the unattended point-of-transaction device is requested to perform and at least a portion of the information that establishes the authorization of the mobile communication device to interact with the unattended point-of-transaction device have been entered into a user interface on the mobile communication device;

in response to receiving the confidential information from mobile communication device, verifying, by the entity that manages the unattended point-of-sale transaction device, that the mobile communication device is authorized to interact with the unattended point-of-transaction device;

in response to the verifying, creating, by the entity that manages the unattended point-of-sale transaction device, a transaction file that specifies the action the unattended point-of-transaction device is to perform in conducting the transaction;

assigning, by the entity that manages the unattended point-of-sale transaction device, a transaction identifier that uniquely identifies the transaction to the transaction file;

sending, from the entity that manages the unattended point-of-sale transaction device, the transaction file to the unattended point-of-transaction device;

receiving, by the mobile communication device, the transaction identifier from the entity that manages the unattended point-of-sale transaction device;

verifying, by the mobile communication device, the unattended point-of-transaction device by looking up an identity of a proximate unattended point-of-transaction device and comparing the identity of the proximate unattended point-of-transaction device to an identity of the unattended point-of-transaction device;

transmitting, by the mobile communication device, the transaction identifier to the unattended point-of-transaction device via a near field communication (NFC) transmission;

comparing, by the unattended point-of-transaction device, the transaction identifier received from the mobile communication device to the transaction identifier made available in the transaction file; and

when the transaction identifier received from the mobile communication device matches the transaction identifier made available in the transaction file, performing, by the unattended point-of-sale transaction device, the action specified in the transaction file.

2. The method of claim 1 , wherein the transaction identifier becomes invalid after the transaction is complete.

3. The method of claim 1 , wherein a limit is imposed on a length of time the transaction identifier remains available for transmission by the mobile communication device after being received by the mobile communication device.

4. The method of claim 1 , wherein a time window is imposed for the availability of the transaction identifier to be transmitted by the mobile communication device, the time window comprising a start time for availability for transmission and a length of time after the start time.

5. The method of claim 1 , wherein the transaction identifier is restricted to being transmitted by the mobile communication device only in at least one designated geographic location.

6. The method of claim 5 , wherein the information that establishes the authorization of the mobile communication device to interact with the unattended point-of-transaction device is at least one of:

account information for an account associated with the transaction and a personal identification number (PIN) associated with the account information;

a user identifier and a password; and

biometric information.

7. The method of claim 1 , wherein the unattended point-of-transaction device provides at least one credential to the mobile communication device to thereby verify that the unattended point-of-transaction device is legitimate.

8. The method of claim 1 , wherein the mobile communication device self-locates and after self-location, looks up the proximate unattended point of transaction device.

9. The method of claim 1 , wherein the transaction identifier becomes invalid after one use.

10. The method of claim 1 , wherein a user of the mobile communication device designates a time period during which the transaction identifier will be valid.

11. A system for conducting a transaction with an unattended point-of-transaction device, comprising:

a telecommunications device comprising:

a memory;

a processor; and

an application stored in the memory and executable by the processor to:

establish a secure wireless telecommunications link between the telecommunications device and an entity that manages an unattended point-of-transaction device,

transmit confidential information over the link, the confidential information comprising information that establishes the authorization of the telecommunications device to conduct the transaction with the unattended point-of-transaction device and information regarding an action the unattended point-of-transaction device is requested to perform in conducting the transaction, wherein the information regarding the action the unattended point-of-transaction device is requested to perform and at least a portion of the information that establishes the authorization of the telecommunications device to interact with the unattended point-of-transaction device have been entered into a user interface on the telecommunications device,

receive from the entity that manages the unattended point-of-transaction device a transaction identifier that uniquely identifies the transaction,

verify the unattended point-of-transaction device by looking up an identity of a proximate unattended point-of-transaction device and comparing the identity of the proximate unattended point-of-transaction device to an identity of the unattended point-of-transaction device, and

transmit the transaction identifier to the unattended point-of-transaction device via a near field communication (NFC) transmission;

a system of the entity that manages an unattended point-of-transaction device configured to:

in response to receiving the confidential information from the telecommunications device, verify that the telecommunications device is authorized to interact with the unattended point-of-transaction device,

in response to the verification, create a transaction file that specifies the action the unattended point-of-transaction device is to perform in conducting the transaction,

assign the transaction identifier that uniquely identifies the transaction to the transaction file, and

make the transaction file available to the unattended point-of-transaction device; and

the unattended point-of-transaction device configured to:

compare the transaction identifier received from the telecommunications device to the transaction identifier made available in the transaction file, and

when the transaction identifier received from the telecommunications device matches the transaction identifier made available in the transaction file, perform the action specified in the transaction file.

12. The system of claim 11 , wherein the validity of the transaction identifier is limited by at least one of:

a limit imposed on a length of time the transaction identifier remains available for transmission by the telecommunications device after being received by the telecommunications device;

a time window imposed for the availability of the transaction identifier to be transmitted by the telecommunications device, the time window comprising a start time for availability for transmission and a length of time after the start time; and

the transaction identifier being restricted to being transmitted by the telecommunications device only in at least one designated geographic location.

13. The system of claim 11 , wherein the information that establishes the authorization of the telecommunications device to interact with the unattended point-of-transaction device is at least one of:

account information for an account associated with the transaction and a personal identification number (PIN) associated with the account information;

a user identifier and a password; and

biometric information.

14. The system of claim 11 , wherein the application is further configured to manage at least one of:

storage and retrieval of at least a portion of the information that establishes the authorization of the telecommunications device to interact with the unattended point-of-transaction device;

transmission of the confidential information over the secure wireless telecommunications link, reception of the transaction identifier over the secure wireless telecommunications link, and transmission of the transaction identifier to the unattended point-of-transaction device via NFC; and

erasure of secure information entered into or received by the telecommunications device.

15. The system of claim 11 , wherein the unattended point-of-transaction device is further configure to provide at least one credential to the telecommunications device to thereby verify that the unattended point-of-transaction device is legitimate.

16. The system of claim of claim 11 , wherein the telecommunications device self-locates and after self-location, looks up the proximate unattended point of transaction device.

17. The system of claim of claim 11 , wherein the transaction identifier becomes invalid after one use.

18. The system of claim of claim 11 , wherein a user of the telecommunications device designates a time period during which the transaction identifier will be valid.