In the Netherlands, they solved this by adding a randomly generated transaction reference to the payment. This will appear on your bank / credit card statement. To view details for the transaction (time and location of entry/exit), you have to enter the paid amount and reference.
However, this will only give you info for a single transaction. If you want to see an overview of all your transactions, you need to create an account in their app. After linking your card to your account, again using the reference and amount for a transaction, you can view your travel history.
If you lay in the bed, depending on if you are lying on your back or stomach, left and right still change.
Ususally a bed is positioned with the head against a wall, so if you are facing the bed from the foot end, left and right are always the same. So I vote left/right is as seen from the foot end of the bed.