Devices for cutting interconnected plastic products for use in the medical sector provided in a continuous band of plastic, comprising a laser, a laser control system and an optical acquisition and data processing unit are disclosed. The coated fastener is prepared by heating a metal fastener, or a portion of it, to about 400-2000 F. The latch has a nest engageable with the resisting portion, and a latching portion provided with a pair of claws. The system and methods described provide processes for determining whether a Subscriber Entity Module is present with a digital certificate for a domain of an administrator, e.