I don't think any long-term implicit consent is acceptable. I would not expect that after opening one document in a folder without being shown any permission prompt, that permissions have been permanently altered. I would never even go look to see if it was "implicitly permitted".

Without a prompt or notice, I would expect only that the app has access to the file or directory I chose until the app is closed/quit.

▲

ted_dunning an hour ago | parent | next [-]

Why should the permission even persist that long? You might leave that app running for the next two years.

Shouldn't a temporary access be temporary? Possibly scoped by time? Possibly scoped to a single access?

	▲	jeremyjh an hour ago \| parent [-]
		Because the app may generate more than one descriptor for it or perform more than one read or write operation in the normal course of usage. If I open a document, and come back to it 6 hours later and click the save button, I would expect it to save the document.

▲

saagarjha an hour ago | parent | prev [-]

How would the app be able to reopen the file then?

▲

jeremyjh an hour ago | parent [-]

It would ask for permission.

	▲	saagarjha 14 minutes ago \| parent [-]
		Every time you relaunch the app?