Transit account management with mobile device messaging

1. A computer-implemented method, comprising:

receiving, at a transit system from a mobile device, an account management request that includes information identifying the mobile device and a particular account management command;

associating, by the transit system, the mobile device with a transit user account based on the information identifying the mobile device;

determining, by the transit system, whether funding is required to implement the particular account management command;

sending, by the transit system to a funding source associated with a user of the mobile device, a request for transfer of funds to a product associated with the transit user account when funding is required to implement the particular account management command; and

sending, by the transit system to the mobile device, an account management response that includes an indication of completed transfer of funds to the product associated with the transit user account when the transfer of funds is complete, and an indication of incompleted transfer of funds to the product associated with the transit user account when the transfer of funds is incomplete.

2. The method of claim 1 , further comprising determining whether a transaction fee is associated with the account management request.

3. The method of claim 2 , further comprising determining that a transaction fee of zero amount is associated with the account management request.

4. The method of claim 3 , wherein:

the account management request comprises a query to identify a balance of the transit user account; and

the account management response specifies the balance of the transit user account.

5. The method of claim 3 , wherein:

the account management request comprises a query to determine a status of the transit user account; and

the account management response specifies the status of the transit user account as active or inactive.

6. The method of claim 3 , wherein:

the account management request comprises a command to enroll with the transit system particular transit fare media other than the mobile device; and

the account management response includes confirmation of enrollment of the particular transit fare media with the transit system.

7. The method of claim 3 , wherein the account management request comprises a command to activate particular transit fare media other than the mobile device, the method further comprising:

associating the transit user account with the particular transit fare media such that the transit fare media can be used in transactions with the transit system; and

including, in the account management response, confirmation of activation of the particular transit fare media with the transit system.

8. The method of claim 2 , further comprising determining that a transaction fee of non-zero amount is associated with the account management request.

9. The method of claim 8 , wherein:

the account management request comprises a command to add a predetermined amount of value to a product associated with the transit user account; and

the account management response specifies confirmation or denial of addition of the predetermined amount of value to the product associated with the transit user account.

10. The method of claim 8 , wherein:

the account management request comprises a command to add a user-specified amount of value to a product associated with the transit user account; and

the account management response specifies confirmation or denial of addition of the user-specified amount of value to the product associated with the transit user account.

11. A computing system, comprising:

at least one processor; and

a memory communicatively coupled to at least one processor, the memory storing instructions that, when executed by the at least one processor, cause the at least one processor to implement at least one module to enable a user of a mobile device to manage a transit user account using the mobile device, the transit user account associated with the mobile device and used in transactions with a transit system, the at least one module configured to:

detect receipt, from the mobile device, of an account management request that includes information identifying the mobile device and a particular account management command;

determine whether funding is required to implement the particular account management command;

send to a funding source associated with the user of the mobile device a request for transfer of funds to a product associated with the transit user account when funding is required to implement the particular account management command; and

send to the mobile device an account management response that includes an indication of completed transfer of funds to the product associated with the transit user account when the transfer of funds is complete, and an indication of incompleted transfer of funds to the product associated with the transit user account when the transfer of funds is incomplete.

12. The computing system of claim 11 , wherein the at least one module is further configured to determine whether the transit user account is a valid account prior to a sending of the account management response message.

13. The computing system of claim 12 , wherein the at least one module is further configured to send an error message to the mobile device upon determination that the transit user account is an invalid account.

14. The computing system of claim 11 , wherein the at least one module is further configured to, prior to a sending of the account management response message, determine whether a transaction fee is associated with the account management request message.