2- Biometric Transformations: This approach is based on the transformations of biometric features, where it is categorized into two ways: Bio-Hashing which is used an external key source (PIN or Password) and other functional parameter representation to generate Hash value of the biometric data, it stores the Hash value alone in the data base    and Non-invertible transformation  , such that no information can be revealed from the cancelable biometrics template, which is stored in databases for personal identification/verification, or using biometric data to transform its cancellable domain by polynomial functions and co-occurrence matrices.
Thus, cancelable template can be attained by template chaff point's encapsulation, where the principal objectives of cancellable biometrics templates can be checked, such as diversity, cancelability, reusability, non-invertability, and performance of technique.
Connell, "Cancelable iris biometric," in Proceedings of the 2008 19th International Conference on Pattern Recognition (ICPR), pp.
Uhl, "Cancelable iris biometrics using block re-mapping and image warping," in Proceedings of the the 12th International Conference on Information Security (ISC), pp.
Since it can generate new transformation template by changing some parameters, the template is cancelable.
This paper introduces the Fuzzy Vault algorithm, by combining Fuzzy Vault algorithm with cancelable biometric template, we propose an improved algorithm: firstly we use a special Irreversible function to convert the original fingerprint template into transformation template, and then using the Fuzzy Vault algorithm for protecting keys and transformation template, and combined with minutia descriptor for encrypting the abscissa of the minutiae.
If, in the course of monitoring a given account, the customer's creditworthiness diminishes, the insurer may reduce or cancel the credit limits it had previously approved, hence the term "cancelable." So long as the insurer is acting in good faith, and the policy is appropriately drafted, such a reduction in or cancelation of credit limits will only apply to future transactions, but should not affect transactions that precede the insurer's notification of the cancelation or reduction.
As a result, unlike cancelable insurance, where the insurer is actively involved in credit decisions, an insurer's underwriting of a non-cancelable program tends to be more "hands-off." Policyholders may also have greater "discretionary credit limits" allowing them to have more control to assign credit limits to their accounts (though larger customers may require insurer approval).
To overcome the "big brother" problem, the concept of cancelable biometrics has been introduced by Ratha et al.
Some fingerprint-related algorithms inspired from cancelable biometrics have been proposed , -.
Long viewed as separate yet ordinary features of the trade credit insurance landscape, the distinction between cancelable
and non-cancelable forms of coverage hit center stage during the financial crisis several years ago.
Diversity: No same cancelable
template can be used in two different applications.