If someone loses their card, report it stolen, they deactivate it, it’s worthless plastic. Problem solved.

I think you would have a maximum of 60 keystrokes to get it:

No. There’s 60 combinations, but you need 210 keystrokes to enter them — when you make a bad guess, you have to start over and re-enter all the previous (known) digits again.

The real solution is RFID badges like every legitimate company in North America uses. Cheap to produce, cheap to maintain, easy to implement

And easy to steal, oh yes. Use your brain.

The real solution is RFID badges like every legitimate company in North America uses. Cheap to produce, cheap to maintain, easy to implement (eg, instead of a keypad that reads a code from someone’s fingers, it’s an RFID receiver that reads a code from someone’s access badge).

Each person who has access gets a badge, then you can not only have better security against “Oh the code is 555876,” but also better security from logs of who entered when, this way people are deterred quite effectively from sharing badges/access to the area.

Duh?

10 trys to get the first #
10 for second
10 for third
10 for fourth
10 for fifth
10 for sixth

60 tries and you find a correct #.

Brian

The correct number of possible codes is actually much easier to come by. Note that the possible codes range from

000000
000001
…
999998
999999

You’ll see that it is simply every number between 0 and 999,999 padded with 0’s on the left. So, there are actually 1,000,000 codes to try with the new system.