Take a look at the following sample flows to see some of the ways you can design permissions and sign-in tasks:

- [Grant permissions on phone](https://developer.android.com/design/ui/cars/guides/flows/grant-permissions-on-phone)
- [Grant permissions over car screen](https://developer.android.com/design/ui/cars/guides/flows/grant-permissions-in-car)
- [Sign into the app while parked](https://developer.android.com/design/ui/cars/guides/flows/sign-in-while-parked)
- [Create settings](https://developer.android.com/design/ui/cars/guides/flows/create-settings)
- [Purchase using existing payment methods](https://developer.android.com/design/ui/cars/guides/flows/purchase)