How technology is used in relation to paper voter lists?

Cameroon, Electoral Code (2012), accessed 10 February 2020

SECTION 106: (1) The fact that an elector has voted shall be evidenced by affixing the elector’s signature and finger print using indelible ink on the relevant column of the electoral register.

(2) Where the elector is unable to sign, the fact that such elector has voted shall be evidenced by affixing the elector’s finger print using indelible ink on the relevant column of the electoral register.