Patent ID: 7932810

Claim:
A method of inputting a user input access combination in order to gain authorized entry into a secure location, the method comprising: providing an input device having a first input key, a second input key, and a display; randomly generating a first character and a second character, the first character being displayed on a first display portion and the second character being displayed on a second display portion; inputting the user input access combination into the input device, the user input access combination including a first user input character and a second user input character selected from a character set, wherein inputting the user input access combination comprises: pressing the first input key to change the first randomly generated character to the first user input character, wherein pressing and holding the first input key causes the first display portion to continuously scroll through the character set and pressing the first input key at discrete instances causes the first display portion to step through the character set sequentially; pressing the second input key to lock the first user input character in the first display portion and store the first user input character in temporary memory; pressing the second input key to change the second randomly generated character to the second user input character, wherein pressing and holding the second input key causes the second display portion to continuously scroll through the character set and pressing the second input key at discrete instances causes the second display portion to step through the character set sequentially; and pressing the first input key to lock the second user input character in the second display portion and store the second user input character in the temporary memory; and comparing the user input access combination with an authorized access combination.