By Todd Burner The days of tumbler locks and keys are fading, especially in high-traffic areas. Proximity cards—those credit-card-sized, contactless devices that grant users access to a variety of areas—have largely taken their place. But for too many facilities that card represents one of its biggest security gaps. Proximity cards (also known as keycards) are incredibly … [Read more...] about Your keycard could be your office’s top security threat