Port of Halifax will be using biometrics as a second factor of authentication to access its port facilities. Port security officer Gordon Helm chose vascular scanning instead of fingerprints, retinal scans or voice prints. The technique uses a passive infrared scan of the back of your hand to take a picture of the vein pattern and match it to a stored image of the same vein pattern. The port security officer believes vascular scanning could become the biometric that gains widespread acceptance and, finally, overcomes the main hurdle to widespread adoption.”]
Source: https://www.csoonline.com/article/2122067/you-re-so-veined.html