Fraud resistant biometric financial transaction system and method
View Patent ↗A method and system for authenticating financial transactions is disclosed wherein biometric data is acquired from a person and the probability of liveness of the person and probability of a match between the person or token and known biometric or token information are calculated, preferably according to a formula D=P(p)*(K+P(m)) , wherein K is a number between 0.1 and 100, and authenticating if the value of D exceeds a predetermined value.
1. A method for authorizing a transaction, comprising:
acquiring biometric data from a person in connection with a transaction;
determining a probability of liveness, P 1 , of the person, and a probability of match, P 2 , between the person and data acquired from known individuals; and
providing an authorization decision based on a combination of P 1 and P 2 , the combination emphasizing the contribution of P 1 in moving the authorization decision towards acceptance of the transaction.
2. The method of claim 1 , further comprising determining P 1 and P 2 such that means for determining P 1 is less sensitive, as compared to means for determining P 2 , to conditions out of the control of either means.
3. The method of claim 1 , further comprising determining P 1 and P 2 such that means for determining P 1 is less sensitive, as compared to a means for determining P 2 , to illumination changes or orientation of the person.
4. The method of claim 1 , further comprising moving the authorization decision towards acceptance of the transaction if P 1 comprises a value that is near to 1.
5. The method of claim 1 , further comprising authorizing the transaction if P 1 comprises a value that is near to 1, and P 2 comprises a value of about 0.25 or greater.
6. The method of claim 1 , further comprising authorizing the transaction if P 1 and P 2 are above a threshold, authorizing the transaction if P 1 is above the threshold and P 2 is below the threshold, and not authorizing the transaction if P 1 and P 2 are below the threshold.
7. A system for authorizing a transaction, comprising:
a sensor acquiring biometric data from a person in connection with a transaction;
a biometric module:
determining a probability of liveness, P 1 , of the person, and a probability of match, P 2 , between the person and data acquired from known individuals; and
providing an authorization decision based on a combination of P 1 and P 2 , the combination emphasizing the contribution of P 1 in moving the authorization decision towards acceptance of the transaction.
8. The system of claim 7 , wherein the biometric module comprises means for determining P 1 and P 2 such that the means for determining P 1 is less sensitive, as compared to the means for determining P 2 , to conditions out of the control of either means.
9. The system of claim 7 , wherein the biometric module comprises means for determining P 1 and P 2 such that the means for determining P 1 is less sensitive, as compared to the means for determining P 2 , to illumination changes or orientation of the person.
10. The system of claim 7 , wherein the biometric module moves the authorization decision towards acceptance of the transaction if P 1 comprises a value that is near to 1.
11. The system of claim 7 , wherein the biometric module authorizes the transaction if P 1 comprises a value that is near to 1, and P 2 comprises a value of about 0.25 or greater.
12. The system of claim 7 , wherein the biometric module authorizes the transaction if P 1 and P 2 are above a threshold, authorizes the transaction if P 1 is above the threshold and P 2 is below the threshold, and does not authorize the transaction if P 1 and P 2 are below the threshold.
13. A method for authorizing a transaction, comprising:
acquiring biometric data from a person in connection with a transaction;
determining a probability of liveness, P 1 , of the person, and a probability of match, P 2 , between the person and data acquired from known individuals, wherein means for determining P 1 is less sensitive, as compared to means for determining P 2 , to conditions out of the control of either means; and
providing an authorization decision for the transaction based on a combination of P 1 and P 2 .
14. The method of claim 13 , wherein providing the authorization decision comprises providing the authorization decision based on a combination of P 1 and P 2 , the combination emphasizing the contribution of P 1 to the combination.
15. The method of claim 13 , wherein providing the authorization decision comprises providing the authorization decision based on the combination of P 1 and P 2 , the combination emphasizing the contribution of P 1 in moving the authorization decision towards acceptance of the transaction.
16. The method of claim 13 , wherein determining P 1 and P 2 comprises determining P 1 and P 2 such that means for determining P 1 is less sensitive, as compared to a means for determining P 2 , to illumination changes or orientation of the person.
17. The method of claim 13 , further comprising moving the authorization decision towards acceptance of the transaction if P 1 comprises a value that is near to 1.
18. The method of claim 13 , further comprising authorizing the transaction if P 1 comprises a value that is near to 1, and P 2 comprises a value of about 0.25 or greater.
19. The method of claim 13 , further comprising authorizing the transaction if P 1 and P 2 are above a threshold, authorizing the transaction if P 1 is above the threshold and P 2 is below the threshold, and not authorizing the transaction if P 1 and P 2 are below the threshold.
20. A method for authorizing a transaction, comprising:
acquiring biometric data from a person in connection with a transaction;
determining a probability of liveness, P 1 , of the person, and a probability of match, P 2 , between the person and data acquired from known individuals; and
authorizing the transaction if P 1 and P 2 are above a threshold, authorizing the transaction if P 1 is above the threshold and P 2 is below the threshold, and not authorizing the transaction if P 1 and P 2 are below the threshold.
21. The method of claim 20 , further comprising emphasizing P 1 's contribution to a decision for authorizing the transaction.
22. The method of claim 20 , wherein determining P 1 and P 2 comprises determining P 1 and P 2 such that means for determining P 1 is less sensitive, as compared to a means for determining P 2 , to illumination changes or orientation of the person.