PERSONAL TRANSACTION DEVICE WITH FIG. 2 is a simplified block diagram of one embodiment
SECURE STORAGE ON A REMOVABLE of a privacy card for a personal transaction device.
MEMORY DEVICE FIG. 3 is a simplified block diagram of one embodiment
of a digital wallet for a personal transaction device.
FIG. 4 illustrates an embodiment of a memory storage
This application claims the benefit of U.S. Provisional area within a memory storage device.
Application Ser. No. 60/254,338 filed on Dec. 8, 2000, FIG. 5 illustrates another embodiment of a memory
which is hereby incorporated by reference. storage area within a memory storage device.
10 FIG. 6 illustrates an embodiment of a flow diagram for
BACKGROUND OF THE INVENTION operation of the secure transaction system of FIG. 1.
1. Field of the Invention FIG. 7 illustrates one embodiment of protecting confiThe present invention relates to a device coupled to a dential information in the memory storage device illustrated
I T / " O A J S
removable memory device having a secure storage. ln ^iijs. 4 ana 3
2. Art Background DETAILED DESCRIPTION Transactions are preformed everyday over different
networks, such as the Internet, and through point of sale In the following descriptions for the purposes of
(POS) or bank systems. Such systems are designed to explanation, numerous details are set forth in order to
maintain the integrity of the user's credit card, debit card, 9n Provlde a thorough understanding of the present invention,
and account number. However, no measures are taken to However, it will be apparent to one skilled in the art that
ensure the privacy of the user. As the vendor retains infor- these sPeclfic detalls are not reclulred ln order to Practlce the
mation regarding the identity of the user, the user is open to Present invention. In other instances, well known electrical
receipt of marketing materials that may result from the data structures or circuits are shown in block diagram form in
mining of transactions performed on a particular network. 25 order not to obscure the Present invention unnecessarily.
Moreover, consumers of different devices connecting to In one embodiment, a system and method enable a user to the different networks and through POS or bank systems are conduct electronic commerce transactions without comproconcerned regarding the storage of confidential information mlslng the user's Personal identification information and including personal information, financial information, etc. in ldentltv' wMe also Providing enhanced direct marketing for such devices. Some consumers perceive more control over 30 vendors. The following description discusses embodiments such information handled within a traditional wallet, that is ln the context of Internet and Polnt of s:de (P0S) networks, the wallet having this information that a user can simply However, it is readily apparent that embodiments are not inspect, to perhaps ensure that this information that could umlted to these ... networks, and are applicable to include the consumer's social security number, mother's ^ network that 15 configured to perform a transaction, maiden name, car lock combination, etc. would not be 35 In an embodiment, a personal transaction device is corncompromised in the even of loss or theft. municatively coupled to a detachable memory storage
device, wherein the detachable memory storage device
SUMMARY OF THE INVENTION includes public and private storage areas. In one such
embodiment, the encryption/decryption key for the private
An electronic system includes a user transaction device storage area is stored in the memory of the personai trans.
that provides a device identifier when coupled to a transac- action device Accordingly, if the detachable memory stor
tion terminal. The transaction terminal is configured to age device were lost or stolen> the data within the private
indicate that a transaction is to be performed when coupled storage area would remain maccessible without the personal
to the user transaction device. The electronic system also transaction device that includes the key for the encrypted
includes a transaction privacy clearinghouse (TPCH), data
coupled selectively to the user transaction device when a 45 rlr^ 1 • ui 1 J- e u A- » e
r . . / r , __.„„ . , , FIG. 1 is a block diagram of one embodiment of a secure
transaction is to be performed. Ihe 1PCH is coupled to , .. , , . , , , . , ,
, , . r . , .„ , ., , , transaction system, which may be used in electronic com
receive the device identifier and accessible data. T • , , , .. . ,
..... , ., , , . , , . ... merce. In this embodiment, a transaction privacy clearing
Additionally, the accessible data is to be stored in a public , TMTMn n^-.r / j
, . , , house (1PCH) 115 interfaces a user (consumer) 140 and a
storage area of a memory storage device that can be com- , \~, , ., . .. , , .
. . , ,,1 • , • rTM 50 vendor 125. In this particular embodiment, a personal trans
mumcatively coupled to the user transaction device. Ihe .. , • /Tm=\\ nn • j m=
„_,„„ , 3 . r . , , , , . ., action device (PID) 170, e.g., a privacy card 105, or a
1PCH authorizes a transaction based upon the device iden- . j 1 Jt j- -t 1 n * i=n • J*
.. , , ., , , , • , f • r privacy card 105 coupled to a digital wallet 150, is used to
tifier and the accessible data that includes account intorma- • . • • (,, u-i u.- .1 .
. , . , . , , . maintain the privacy of the user while enabling the user to
tion of a user that is authorized to use the user transaction r , ,. T , u J- * *u Titt->
, . . . , . , ., perform transactions. In an alternate embodiment, the PID
device. Moreover, a transaction is authorized without pro- \nn , .. , , , . , , . , ,
....... r , , . . , 55 170 may be any suitable device that allows unrestricted
viding the identity of the user to the transaction terminal. , TM„tI r^, , , , . . r
r^, • access to 1PCH 130. Ine personal transaction device mtor
1 he memory storage device also includes a private storage .. . ,, rT,T,„TT „ -,,, . , ,
. J ?<.,.,, ,, , • mation is provided to the 1PCH115 that then indicates to the
area tor storage of confidential data such that the private , , 1Atl , c. ...
. & , , . , , , . , r , vendor 125 and the user 140 approval of the transaction to
storage area is to be encrypted with a key that is to be stored , r ,
, . , . J be performed,
in the user transaction device. .. . , . ,. .
60 In order to maintain confidentiality of the identity of the
BRIEF DESCRIPTION OF THE DRAWINGS user 140, the transaction device information does not provide user identification information. Thus, the vendor 125 or
The objects, features and advantages of the present inven- other entities do not have user information but rather trans
tion will be apparent from the following detailed description action device information. The TPCH 115 maintains a
in which: 65 secure database of transaction device information and user
FIG. 1 is a simplified block diagram of one embodiment information. In one embodiment, the TPCH 115 interfaces to
of a secure transaction system. at least one financial processing system 120 to perform