H. P. Luhn

H. P. Luhn was a pioneering computer scientist known for developing methods to improve data accuracy, particularly in identifying errors in numbers like credit card or identification numbers. His most famous contribution is the "Luhn Algorithm," a checksum formula that detects accidental errors in sequences of digits. It works by performing calculations on the digits to generate a check digit, which helps verify the validity of the entire number. This system is widely used because it's simple to implement and effective in catching common mistakes, ensuring data integrity in various digital transactions and record-keeping systems.