Problem with retrieving incomplete data online

[wakecarter]

My understanding is that if the participant presses escape, the data is deleted because the participant has effectively withdrawn consent.

How many participants can run online experiment simultaneously?!

There has been some debate about what to do in these scenarios. When a participant presses escape, are they essentially withdrawing consent and expect no data to be saved? I believe we are currently treating it that way, so data are deleted and the credit released.