How do I AirDrop hidden ("dot") files?
There are a few restrictions with .files, mainly because they are usually files important to the system. For example, aside from being hidden by default you can't rename a normal file to ".file" (You will get a system alert, I'm pretty sure), nor you can rename a ".file" directly from any Finder window, like most other files: you need to "Get Info", and rename it from there.

One plausible solution I can think of is perhaps renaming it before you send it, though if you want to avoid this (because they are sensitive files after all) you can compress it and then rename the zip file you get. Simply:


Control click on the file and select "Compress ..."
Control click the zip file and select "Get Info"
Under "Name and extension" you should be able to change the name of
the file. Simply remove the period.


I know its kind of a log workaround, but its the best I could find. :/ Hope it helps though!