Page 730 - Windows 10 May 2019 Update The Missing Manual: The Book That Should Have Been in the Box

Location history. Windows stores your location for 24 hours on

the PC; during that time, apps that need to know where you are (a
weather app, Lyft) can access it. But if you’ve been somewhere
shady, and you’re running for Congress, you can hit Clear to delete
that data for now.

Choose which apps. Finally, the main event: On/off switches for
each app’s access to your location (Figure 11-9, bottom).

Geofencing. Some apps turn features on and off only when you’re
within a specified geographic area (a geofence). Apps that remind

you when you get to a location (“Pick up milk when you’re near
the grocery”), provide discounts at specific stores or attractions, or
“check in” at certain locales all rely on the geofence feature.

This item tells you whether or not any of your apps are using a
geofence—not that there’s anything you can do about it.

Camera, Microphone, Contacts, Calendar…

Many items on this Settings screen list the various parts of your machine—
both hardware features and apps like the Calendar and People apps—that
various apps might want to access.

Each of these panels offers controls that mimic the Location options already
described:

Allow access on this device. This is the master Off switch for all
apps, all accounts—your entire PC. Administrative privileges
required.

Allow apps. Then comes the master switch for just your account.
“No app is going to use my camera!” you might declare, when

you’ve had a particularly rough night.

Choose which apps. Then comes the list of apps that seek to use
this component of your computer, complete with on/off switches.