1461153738-6a0d11dc-0564-47e7-b83a-644470525753

1.-23. (canceled)
24. A method comprising:
creating, using a server computer, a plurality of derived account identifiers, wherein each derived account identifier is derived from a permanent account identifier associated with a consumer, wherein the plurality of derived account identifiers includes a first derived account identifier usable with a first payment mechanism, the first payment mechanism comprising a physical device, wherein the plurality of derived account identifiers further includes a second derived account identifier usable with a second payment mechanism, further wherein the first derived account identifier is not usable with the second payment mechanism and the second derived account identifier is not usable with the first payment mechanism; and
providing the plurality of derived account identifiers to the consumer.
25. The method of claim 24, wherein the plurality of payment mechanisms comprises a communication channel using a portable consumer device, a communication channel using a POS terminal, and a communication channel using a computer connected to the Internet.
26. The method of claim 24, wherein the permanent account identifier is not directly used to conduct transactions.
27. The method of claim 24, wherein the permanent account identifier and the derived account identifiers are in the form of different account numbers.
28. The method of claim 24, further comprising providing replacement derived account identifiers if an account identifier in the plurality of derived account identifiers has expired or has been comprised.
29. The method of claim 24, wherein the permanent account identifier comprises a base account identifier, and each derived account identifier comprises manipulating the base account identifier.
30. The method of claim 24, wherein the derived account identifiers in the plurality of account identifiers are manipulated using different methods for each different payment mechanism.
31. The method of claim 24, wherein if one of the derived account identifiers in the plurality of derived account identifiers is used fraudulently, any other derived account identifiers are not comprised.
32. A server computer comprising a processor and a computer readable medium comprising code executable by the processor to implement a method, the method comprising:
creating a plurality of derived account identifiers, wherein each derived account identifier is derived from a permanent account identifier associated with a consumer, wherein the plurality of derived account identifiers includes a first derived account identifier usable with a first payment mechanism, the first payment mechanism comprising a physical device, wherein the plurality of derived account identifiers further includes a second derived account identifier usable with a second payment mechanism, further wherein the first derived account identifier is not usable with the second payment mechanism and the second derived account identifier is not usable with the first payment mechanism; and
providing the plurality of derived account identifiers to the consumer.
33. A method comprising:
using a first derived account identifier usable with a first payment mechanism in a first transaction, the first payment mechanism; and
using a second derived account identifier usable with a second payment mechanism in a second transaction, wherein the first derived account identifier is not usable with the second payment mechanism and the second derived account identifier is not usable with the first payment mechanism, and further wherein the first and second derived account identifiers are derived from a permanent account identifier associated with a consumer.
34. The method of claim 33, wherein the first and second derived account identifiers include different account numbers.
35. The method of claim 33, wherein the first and second transactions are purchase transactions.
36. The method of claim 33, wherein the plurality of payment mechanisms comprises a communication channel using a portable consumer device, a communication channel using a POS terminal, and a communication channel using a computer connected to the Internet.
37. The method of claim 33, wherein the permanent account identifier is not directly used to conduct transactions.
38. A method comprising:
receiving an authorization request message comprising a derived account identifier, wherein the derived account identifier is usable with a payment mechanism, the payment mechanism comprising a physical device, further wherein the derived account identifier is associated with a permanent account identifier;
determining the permanent account identifier associated with the derived account identifier; and
forwarding the authorization request message to an issuer using the permanent account identifier.
39. The method of claim 38, wherein the authorization request message is a first authorization request message and the derived account identifier is a first derived account identifier usable with a first payment mechanism, and the method further comprising:
receiving a second authorization request message comprising a second derived account identifier usable with a second payment mechanism, wherein the second derived account identifier is associated with the permanent account identifier, further wherein the first derived account identifier is not usable with the second payment mechanism and the second derived account identifier is not usable with the first payment mechanism; and
forwarding the second authorization request message to the issuer using the permanent account identifier associated with the first and the second derived account identifiers.
40. The method of claim 38, further comprising:
receiving an authorization response message from the issuer;
converting the permanent account identifier back to the derived account identifier; and
forwarding the authorization response message to a consumer associated with the permanent account identifier.
41. A server computer comprising a processor, and a computer readable medium comprising code executable by the processor to implement a method, the method comprising:
receiving an authorization request message comprising a derived account identifier, wherein the derived account identifier is usable with a payment mechanism, the payment mechanism comprising a physical device, and wherein the derived account identifier is associated with a permanent account identifier;
determining the permanent account identifier associated with the derived account identifier; and
forwarding the authorization request message to an issuer using the permanent account identifier.

The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.

1. A printer for use with an external apparatus, the printer having a web server function, the printer comprising:
a processor; and
a memory configured to store one or more computer readable instructions,
wherein the memory includes a command file storage configured to store a command file including:
a first command for causing the external apparatus to display a web page including a first portion in which first data is located and a second portion in which second data is located,
a second command for causing the external apparatus to send a request for third data to the printer, and
a third command for causing the external apparatus to update only the second portion with the third data;

wherein the one or more computer readable instructions, when executed by the processor, cause the printer to perform:
receiving a request from the external apparatus;
sending a response including the command file to the external apparatus in a case when a request for the command file is received from the external apparatus; and
sending a response including the third data to the external apparatus in a case where the request for the third data is received from the external apparatus.
2. The printer as in claim 1, wherein:
the first command includes a first section in which data for causing the external apparatus to determine a display content of the first portion is to be described and a second section in which data for causing the external apparatus to determine a display content of the second portion is to be described, and
the third command is a command for causing the external apparatus to describe the third data in the second section.
3. The printer as in claim 1, wherein:
the first data includes a first object being displayed on the web page on which a predetermined operation is to be performed in the external apparatus, and
the second command is a command for causing the external apparatus to send the request for the third data in a case where the predetermined operation is performed on the first object.
4. The printer as in claim 3, wherein:
the first data includes a plurality of first objects being displayed on the web page on which the predetermined operation is to be performed, and
the second command is a command for causing the external apparatus to send, in a case where the predetermined operation is performed on one first object among the plurality of first objects, the request for the third data corresponding to the one first object.
5. The primer as in claim 4,
wherein the second data includes a second object being displayed on the web page on which a predetermined operation is to be performed in the external apparatus,
wherein the command file further includes:
a fourth command for causing the external apparatus to send a request for fourth data in a case where the predetermined operation is performed on the second object; and
a fifth command for causing the external apparatus to update only a part of the second portion with the fourth data,

wherein the one or more computer readable instructions, when executed by the processor, cause the primer to further perform:
sending a response including the fourth data to the external apparatus in a case where the request for the fourth data is received from the external apparatus.
6. The printer as in claim 1, wherein:
the third data is a status of the primer at a time when the request for the third data is received from the external apparatus.
7. The printer as in claim 6,
wherein
the second command is a command for causing the external apparatus to send the request for the third data, the request including a status being displayed on the web page,
wherein the one or more computer readable instructions, when executed by the processor, cause the printer to further perform:
determining, in a case where the request for the third data is received from the external apparatus, whether the status included in the request for the third data is identical to the status of the printer at the time when the request for the third data is received from the external apparatus; and
sending a response not including the third data to the external apparatus in a case where the request for the third data is received from the external apparatus and it is determined that the status included in the request for the third data is identical to the status of the printer at the time when the request for the third data is received from the external apparatus,
wherein the sending of the response including the third data is performed in a case where the request for the third data is received from the external apparatus and it is determined that the status included in the request for the third data is identical to the status of the printer at the time when the request for the third data is received from the external apparatus.