They have to have an alternative (the regular ticket with that photo ID they tell you to bring in case of problems) in case the scanner malfunctions or a person has a handicap that prevents them from using the finger scanner. Can't discriminate against the disabled. Amputees, those with birth defects, those with e.g. rheumatoid arthritis would file a lawsuit - and win.
totally agree.....my daughter has amniotic bands on both hands....IE she is missing some fingers and parts of others. There is no way she could go through a finger print line like that.