Some of these machines also print names of chosen candidates on paper for the voter to verify, though less than 40% verify. These names on paper are kept behind glass in the machine, and can be used for election audits and recounts if needed. The tally of the voting data is printed on the end of the paper tape. The paper tape is called a Voter-verified paper audit trail (VVPAT). The VVPATs can be tallied at 20-43 seconds of staff time per vote (not per ballot).