Add pin protection to Proton Calendar for Android
There is a pin protection function on Proton Mail for Android. Having the same function on Calendar would help secure this sensitive info.

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Csaba commented
A PIN+biometric lock is a critically important feature for a privacy focused calendar app. The Proton Mail and Drive apps already have this, I am surprised that the Calendar app is still unprotected.
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Anonymous commented
I agree. This is a fundamental feature to have on a service that is privacy focused in my opinion.
Having a PIN-code on the calendar app is equally as important as having it on the e-mail app.
Calendar events are sensitive in nature too, espacially if someone gets a hold of your phone and your entire calendar.
Sure, you can you terminate the session from the web but a PIN-code that can be set immediately would provide an extra layer of security, just like with the e-mail app.