Our customer support applications do lookups by credit card number. How will these applications be impacted?
You will need to create an alternative method for locating records in your database. If you are currently looking up records by credit card number, consider accessing records by customer name and date range (from date, to date). Or, you may be able to access records by customer name and zip code. By eliminating the credit card number from the access logic you can create a much smaller set of records, and then decrypt and display the credit card number as needed.