When the application wants to use data that it doesn't need
For instance, I use the TRIPADVISOR Cities I've Visited app. Its a useful way of sharing your travel.
Now it wants (as "required" items of data)
- access my basic information
OK - I can live with it knowing my name, profile pic, and data I've shared with everyone (not that I do share with 'everyone') and list of friends.
- send me email
OK - not a problem
- access my profile application
NOT OK _ why does it need to know my faviourite TV show?
- access my familiy and relationships
NOT OK_ why does it need to know my relationships ?
- access my photos & videos
PART OK - but only the ones I WANT to give it to use.
- Access my friends' information
NOT OK - why should my friends surrender data on the basis on MY travel details?
What we can see here is a GOOD APP that is being OVER GRABBY with its information requests.
The END USER needs to be able to SELECTIVELY say NO to data requests, and if that hamstrings the application then the application can say "oops - can't do that because".