Sinn Fein's Stormont leader, Michelle O'Neill, said the proposals were "big on aspiration but light on clarity".
"Whilst the British Government might say they don't want to see any kind of hard border or technology put in place, it will not be within their gift to deliver that," she said. "It will be the other European member states, who clearly think and believe we need to see customs controls."

http://www.itv.com/news/2017-08-16/brexit-keeping-irish-border-free-of-checkpoints-is-top-priority/