Hand scan recognition time clocks have been in existence for nearly two decades. To use a hand scan wall timepiece or access control terminal an individual enters their ID and places their right hand around the platen (a toned reflective surface with guide posts which lie between the users fingers) as well as the hand scan unit will begin to perform a match against a registered template and permit access or log attendance.
Hand scan technology relies on a camera as well as a series of mirrors to construct a three dimensional picture of a gamers hand. Using this image the processor in the wall timepiece measures certain hand geometry like the length and proportion of each one finger so it converts into an algorithm. This mathematical representation on the hand is trapped in a template and is also used when matching the consumer during subsequent logging events.
The algorithm is adjusted periodically and due to this feature it compensates for changes from the size of a persons hand over some time so, if the person gains or loses weight the unit compensates. Interestingly the device does depend on the person having a right hand without having fingers missing. Having said that, pan card status online testing from my associates has revealed that a left hand turned ugly will work correctly.
Hand scan terminals are a recognised technology but you are not trusted in either a serious amounts of attendance or access control applications.Hand Scan technology will not be impacted by scratches or cuts or scars within the users hands nor can it be effected by dirty hands although dirt accumulating within the mirrors or platen will ultimately cause misreads. This makes the hand scan an extremely sufficient biometric device.
Given likely actually more reliable than most on the other alternatives it can be surprising they have not been more widely accepted. One possible explanation is they are more expensive than most fingerprint readers and the’ve no embedded software so they really cannot be used being a stand alone wall clock. Additionally, the creators have not assigned exclusivity to a some time and attendance solution provider nor were they developed award interpretation software themselves.
Hand scan time clocks are typically used in harsh environments when fingerprint units simply can’t recognise users who frequently damage their fingers. Typical applications are manufacturing, mining and construction. In those environments click here they are typically installed in a dust proof enclosure to stop the mirrors and camera becoming suffering from dirt. Unfortunately those environments may also be prone to accidental or deliberate mechanical shock that is likely to misalign you and cause complications with template recognition.
Because hand scan terminals don’t have any useful embedded software for some time to attendance it’s important to look for a supplier with award interpretation or attendance software that is certainly integrated using the hand punch terminals. When selected many provider you must ensure that they are a well established hand scan solution provider as integration isn’t as straightforward you may think even though it may manage to work inside the short time there could possibly be some hidden integration issues about the track.
In summary, hand scan technology when in conjunction with some decent 3rd party software is a fantastic option for harsh environments because it’s quite faultless in the recognition capabilities. You will however , almost definitely need a good third party some time and attendance provider and stay aware that the hand scan terminals usually go here are not as robust as some in the alternative and does not take kindly to hard knocks on the occasional accidental or wilful attempt for damage.