Authenticating a user of a system using near field communication

1. A machine-implemented method for providing a token to a system apparatus using a personal device, the method comprising:

receiving a token from the system apparatus, wherein the token is received based on prior user login on the system apparatus via a username and password;

storing the token on the personal device;

establishing, by the personal device and after storing the token, a near field communication (NFC) link with the system apparatus,

wherein the establishing comprises:

performing an initiation handshake with the system apparatus;

exchanging, in response to the initiation handshake, device profile information with the system apparatus; and

authenticating the system apparatus based on the exchanged device profile information;

receiving, at the personal device, an indication of a request for manual input for the username and password on the system apparatus;

retrieving, in response to the received indication of the request and instead of manual input from a user, the token from storage on the personal device; and

transmitting, by the personal device, the token to the system apparatus via the NFC link,

wherein the token is used for logging the user into the system apparatus.

2. The method of claim 1 , further comprising:

terminating the near field communication link with the system apparatus.

3. A personal device for providing a token for user login on a system apparatus, the personal device comprising:

one or more processing devices; and

a machine-readable medium comprising instructions stored therein, which when executed by the processing devices, cause the processing devices to perform operations comprising:

receiving a token from the system apparatus, wherein the token is received based on prior user login on the system apparatus via a username and password;

storing the token on the personal device;

establishing, by the personal device and after storing the token, a near field communication (NFC) link with the system apparatus,

wherein the establishing comprises:

performing an initiation handshake with the system apparatus;

exchanging, in response to the initiation handshake, device profile information with the system apparatus; and

authenticating the system apparatus based on the exchanged device profile information;

receiving, at the personal device, an indication of a request for manual input for a username and password on the system apparatus;

retrieving, in response to the received indication of the request and instead of manual input from a user, the token from storage on the personal device; and

transmitting, by the personal device, the token to the system apparatus via the NFC link,

wherein the token is used for logging the user into the system apparatus.

4. The personal device of claim 3 , the operations further comprising:

terminating the near field communication link with the system apparatus.

5. A non-transitory machine-readable medium comprising instructions stored therein, which when executed by a personal device, cause the personal device to perform operations comprising:

receiving a token from a system apparatus, wherein the token is received based on prior user login on the system apparatus via a username and password;

storing the token on the personal device;

establishing, by the personal device and after storing the token, a near field communication (NFC) link with the system apparatus,

wherein the establishing comprises;

performing an initiation handshake with the system apparatus:

exchanging, in response to the initiation handshake, device profile information with the system apparatus; and

authenticating the system apparatus based on the exchanged device profile information;

receiving, at the personal device, an indication of a request for manual input for a username and password on the system apparatus;

retrieving, in response to the received indication of the request and instead of manual input from a user, the token from storage on the personal device; and

transmitting, by the personal device, the token to the system apparatus via the NFC link,

wherein the token is used for logging the user into the system apparatus.

6. The machine-readable medium of claim 5 , the operations further comprising:

terminating the near field communication link with the system apparatus.

7. A machine-implemented method for authenticating a user on a system apparatus, the method comprising:

requesting a username and password for a user;

receiving the username and password for the user;

generating a token in response to receiving the username and password;

transmitting the token to a personal device for storage on the personal device;

establishing, by the system apparatus and after transmitting the token, a near field communication (NFC) link with the personal device,

wherein the establishing comprises:

performing an initiation handshake with the personal device;

exchanging, in response to the initiation handshake, device profile information with the personal device; and

authenticating the personal device based on the exchanged device profile information;

transmitting, by the system apparatus, an indication of a request for manual input for a username and password to the personal device;

receiving, by the system apparatus and instead of manual input from a user, the stored token from the personal device via the NFC link; and

performing user login on the system using the stored token received via the NFC link.

8. The method of claim 7 , further comprising: terminating the near field communication link with the personal device.

9. A system apparatus for authenticating a user, the system apparatus comprising:

one or more processing devices; and

a machine-readable medium comprising instructions stored therein, which when executed by the processing devices, cause the processing devices to perform operations comprising:

requesting a username and password for a user;

receiving the username and password for the user;

generating a token in response to receiving the username and password;

transmitting the token to a personal device for storage on the personal device;

establishing, by the system apparatus and after transmitting the token, a near field communication (NFC) link with the personal device,

wherein the establishing comprises:

performing an initiation handshake with the personal device; exchanging, in response to the initiation handshake, device profile information with the personal device; and

authenticating the personal device based on the exchanged device profile information;

transmitting, by the system apparatus, an indication of a request for manual input for a username and password to the personal device;

receiving, by the system apparatus and instead of manual input from a user, the stored token from the personal device via the NFC link; and

performing user login on the system using the stored token received via the NFC link.

10. The system apparatus of claim 9 , the operations further comprising:

terminating the near field communication link with the personal device.

11. A non-transitory machine-readable medium comprising instructions stored therein, which when executed by a system apparatus, cause the system apparatus to perform operations comprising:

requesting a username and password for a user;

receiving the username and password for the user;

generating a token in response to receiving the username and password;

transmitting the token to a personal device for storage on the personal device;

establishing, by the system apparatus and after transmitting the token, a near field communication (NFC) link with the personal device,

wherein the establishing comprises:

performing an initiation handshake with the personal device;

exchanging, in response to the initiation handshake, device profile information with the personal device; and

authenticating the personal device based on the exchanged device profile information;

transmitting, by the system apparatus, an indication of a request for manual input for a username and password to the personal device;

receiving, by the system apparatus and instead of manual input from a user, the stored token from the personal device via the NFC link; and

performing user login on the system using the stored token received via the NFC link.

12. The machine-readable medium of claim 11 , the operations further comprising:

terminating the near field communication link with the personal device.