A new user must meet three requirements, before a booking request can be sent. When creating a profile, the user should verify his/her email address. A scan of his/her driver’s license needs to be uploaded. And to send a booking request, the renter must have sufficient credit in order to be able to pay immediately after a booking ends.
You can also screen the renters yourself. On the profile of the renter you can read reviews about him/her, read how many times he/she rented a car and view his/her Facebook page. This way you can make an assessment of the reliability of the user yourself.
Moreover, you can use the texting system. This gives you the opportunity to send the hirer a message and ask for more information.