Voters who show up at some Minnesota polling places next month will encounter sign-in stations equipped with iPads or bar code scanners as part of an experiment designed to test whether more technology would cut wait times, save money and inspire more confidence in the election process. The electronic roster, or e-poll book, pilot project will take place in fewer than 10 cities and counties, but the results are being closely monitored by election officials across the state because lawmakers could broaden the technology’s use — if the price is right. On that score, a task force of lawmakers, elections administrators and others watching over the project met Wednesday to discuss programming challenges, hardware costs and data security. ”We’re not rushing into this,” said Secretary of State Mark Ritchie, the state’s chief elections official. The rosters are an alternative to paper sign-in sheets at precincts. They contain the same type of information: registration data, an indication if someone already voted or has had a challenged registration status.