"When you use our Services, we may infer the generic physical location and geographic regions of your device from your Wi-Fi, Bluetooth and other device settings. For example, your IP address may indicate your general geographic region. Upon your permission, we may collect your mobile device's location."
CamScanner infers location from WiFi, Bluetooth, and other device settings in addition to IP-based geolocation and optional precise GPS — none of which is necessary for a document scanning app.