Requiring ID to vote will not stop voting fraud. A system would need to be made to access a database to ensure that each person can only vote once. The amount of people using the site on a single day would cause a crash and potentially stop people from voting altogether. (how many did it take to crash the obama care site)
A simple low tech solution is possible. A stamp that stains the skin making it impossible wash off in time to vote a second time. Standardize location and colors to accommodate all skin colors and potential problems. EX. the palm of the hand in green, or the neck if a person has a tattoo or is an amputee.
This would also stop the potential excusal of those who do not have ID. Everybody has the to vote.
Simple solutions are better than complex ones.