A colleague came back from France with a doofer. Apparently, Lyon is a notorious toll point and you can wait in excess of an hour to get through. She drove past a huge queue, straight up to the Telepeage lane and straight through.
Yes, go for the Alis doofer - no additional cost which all the others seem to have. Also they do not require a deposit which others do.
With one, no waking up the passenger (if in a RHD car), taking the ticket and then at the end of the section, waking up the passenger,finding the money, queueing and then finally paying.
With Alis you do require a French bank account and payments are by direct debit the month following travel. You can email or fax the forms and you will receive a doofer in less than a week.
But hey, we should not be advertising this. If everyone gets one there will be queues for the Telepeage lane and none at the pay booths
BREXIT - wonder what the future holds