Often car owners face a situation when there is no place to park and have to block the exit of other cars. To avoid problems in such a situation will help the bar for phone number. Now you do not need to look for paper and pen to write your phone number. This device will help to contact you in case of an emergency. The phone number is attached to the double-sided tape under the windshield. If you do not need to leave your phone number, press the case and the number will be hidden.