Transferring assets

1. A computer-implemented method comprising:

receiving, by a computer processor of a mobile payment platform, a transfer request from a first client device to transfer a first monetary amount to the first client device from an account associated with a second client device;

upon a determination that the account contains at least the first monetary amount, transmitting, from the computer processor of the mobile payment platform to the second client device, an approval request comprising instructions for generating a user interface at the second client device that displays information describing the transfer of the first monetary amount and selectable user interface elements for causing the second client device to generate and transmit an approval to transfer the first monetary amount to the first client device that identifies a fixed time duration during which the approval is valid;

receiving, by the computer processor of the mobile payment platform from the second client device, the approval to transfer the first monetary amount to the first client device;

transferring, from the computer processor of the mobile payment platform to the first client device, a code that can be displayed by the first client device and is redeemable for the first monetary amount;

receiving, by the computer processor of the mobile payment platform from a point of sale (POS) device, an authorization request including the code, the code having been provided to the POS device by the first client device;

determining, by the computer processor of the mobile payment platform, whether the first time duration has lapsed; and

upon a determination that the first time duration has not lapsed, transferring, by the computer processor of the mobile payment platform, at least a portion of the first monetary amount from the account associated with the second client device to an account associated with the POS device.

2. The computer-implemented method of claim 1 , wherein the code is an optical code which, when scanned by the POS device, provides the POS device with the code.

3. The computer-implemented method of claim 1 , wherein the account is linked to a first merchant and the POS device is linked to a second merchant.

4. The computer-implemented method of claim 3 , wherein receiving the approval to transfer the first monetary amount further comprises receiving approval from the second merchant.

5. The computer-implemented method of claim 4 , further comprising:

receiving, by the computer processor of the mobile payment platform from the first client device, acceptance of a condition imposed by the first merchant before receiving approval to transfer the first monetary amount.

6. The computer-implemented method of claim 1 , wherein the account is further associated with a third client device, and wherein receiving the approval to transfer the first monetary amount further comprises receiving approval from the third client device.

7. The computer-implemented method of claim 6 , further comprising:

creating, by the computer processor of the mobile payment platform, a group of one or more trusted user accounts associated with the user account; and

automatically providing, by the computer processor of the mobile payment platform, the approval to transfer the first monetary amount to the first client device when the first client device is associated with a trusted user account from the group of one or more trusted user accounts.

8. The computer-implemented method of claim 1 , wherein the first monetary amount is specified in the transfer request.

9. The computer-implemented method of claim 1 , wherein the first monetary amount is specified by the POS device.

10. A mobile payment system comprising:

a computer processor; and

a memory containing instructions that, when executed, cause the computer processor to:

receive a transfer request from a first client device to transfer a first monetary amount to the first client device from an account associated with a user of a second client device;

upon a determination that the account contains at least the first monetary amount, transmit an approval request comprising instructions for generating a user interface at the second client device that displays information describing the transfer of the first monetary amount and selectable user interface elements for causing the second client device to generate and transmit an approval to transfer the first monetary amount to the first client device that identifies a fixed time duration during which the approval is valid;

receive, from the second client device, the approval to transfer the first monetary amount to the first client device;

transfer, to the first client device, a code that can be displayed by the first client device and is redeemable for the first monetary amount;

receive, from a point of sale (POS) device, an authorization request including the code, the code having been provided to the POS device by the first client device;

determine whether the first time duration has lapsed; and

upon a determination that the first time duration has not lapsed, transfer at least a portion of the first monetary amount from the account associated with the user of the second client device to an account associated with the POS device.

11. The mobile payment system of claim 10 , wherein the code is an optical code which, when scanned by the POS device, provides the POS device with the code.

12. The mobile payment system of claim 10 , wherein the account is linked to a first merchant and the POS device is linked to a second merchant.

13. The mobile payment system of claim 12 , wherein receiving the approval to transfer the first monetary amount further comprises receiving approval from the second merchant.

14. The mobile payment system of claim 13 , wherein the instructions further cause the computer processor to:

receive, from the first client device, acceptance of a condition imposed by the first merchant before receiving approval to transfer the first monetary amount.

15. The mobile payment system of claim 10 , wherein the account is further associated with a third client device, and wherein receiving the approval to transfer the first monetary amount further comprises receiving approval from the third client device.

16. The mobile payment system of claim 15 , wherein the instructions further cause the computer processor to:

create a group of one or more trusted user accounts associated with the user account; and

automatically provide the approval to transfer the first monetary amount to the first client device when the first client device is associated with a trusted user account from the group of one or more trusted user accounts.

17. The mobile payment system of claim 10 , wherein the first monetary amount is specified in the transfer request.

18. The mobile payment system of claim 10 , wherein the first monetary amount is specified by the POS device.

19. A non-transitory computer-readable medium containing instructions that when executed by a computer processor of a mobile payment system, cause the computer processor to:

receive a transfer request from a first client device to transfer a first monetary amount to the first client device from an account associated with a user of a second client device;

upon a determination that the account contains at least the first monetary amount, transmit an approval request comprising instructions for generating a user interface at the second client device that displays information describing the transfer of the first monetary amount and selectable user interface elements for causing the second client device to generate and transmit an approval to transfer the first monetary amount to the first client device that identifies a fixed time duration during which the approval is valid;

receive, from the second client device, the approval to transfer the first monetary amount to the first client device;

transfer, to the first client device, a code that can be displayed by the first client device and is redeemable for the first monetary amount;

receive, from a point of sale (POS) device, an authorization request including the code, the code having been provided to the POS device by the first client device;

determine whether the first time duration has lapsed; and

upon a determination that the first time duration has not lapsed, transfer at least a portion of the first monetary amount from the account associated with the user of the second client device to an account associated with the POS device.

20. The non-transitory computer-readable medium of claim 19 , wherein the code is an optical code which, when scanned by the POS device, provides the POS device with the code.

21. The non-transitory computer-readable medium of claim 19 , wherein the account is linked to a first merchant and the POS device is linked to a second merchant.

22. The non-transitory computer-readable medium of claim 21 , wherein receiving the approval to transfer the first monetary amount further comprises receiving approval from the second merchant.

23. The non-transitory computer-readable medium of claim 22 , wherein the instructions further cause the computer processor to:

receive, from the first client device, acceptance of a condition imposed by the first merchant before receiving approval to transfer the first monetary amount.

24. The non-transitory computer-readable medium of claim 19 , wherein the account is further associated with a third client device, and wherein receiving the approval to transfer the first monetary amount further comprises receiving approval from the third client device.

25. The non-transitory computer-readable medium of claim 24 , wherein the instructions further cause the computer processor to:

create a group of one or more trusted user accounts associated with the user account; and

automatically provide the approval to transfer the first monetary amount to the first client device when the first client device is associated with a trusted user account from the group of one or more trusted user accounts.

26. The non-transitory computer-readable medium of claim 19 , wherein the first monetary amount is specified in the transfer request.

27. The non-transitory computer-readable medium of claim 19 , wherein the first monetary amount is specified by the POS device.