When you are on your readings list, if you swipe from left to right to go back to the family screen where you can switch from your profile to someone else profile. However when you swipe right to left it deletes immediately a reading without any confirmation.
Why did I expect by swiping left to right? Get to the calendar view with the summary.
For deletion of a reading, I would expect the same behaviour as when you delete a conversation in "Messages".
Thank you Withings for the great work and products!