The risks of keyless theft when the vehicle is parked outside your home are more straightforward, as the fact that the vehicle parked on a driveway or directly outside a house gives some indication to thieves of the potential key location. However, the risk of theft when outside the home is entirely dependent on the relative risk of the location that the vehicle is parked, which may or may not indicate that the keys will be in close proximity. The same advice would apply to both situations - keep the key as far from the vehicle as possible and in a container that can help prevent the signal being scanned, such as a signal blocker or Faraday pouch.