Off-site voting in NLRB elections?

Looks like the NLRB aims to modernize voting. This Request for Information indicates the Board is seeking information on "secure electronic voting services both for remote and on-site elections." Not sure how much to read into this, but its clear the Board is seeking more than just accurate secret electronic voting. In the request the Board seeks information on "what safeguards, if any, could be implemented to ensure that votes cast remotely were free from distractions or other interferences, including undue intimidation or coercion." At the very least a serious review of the available technology is underway.