Are airline staff told to let you scan your boarding pass if it is on mobile?

//ads -- adsterra.com -- native banner
?>
Several times I have been on a flight with my parents. I use a mobile boarding pass while my parents use a paper one.
At the boarding gate, they take my parents' paper pass and scan it. But for me they ask me to scan my boarding pass.
My question:
Are airline crew instructed to ask the passenger to scan his boarding pass if displayed on a mobile device?
I have a feeling this is true as if the person drops the phone the company don't want to be liable for cracked phones.
Pictures about "Are airline staff told to let you scan your boarding pass if it is on mobile?"



Can they scan boarding pass from phone?
Yes, your mobile boarding pass can be used to proceed through security checkpoint to board your flight. Simply show your mobile boarding pass on a mobile phone, iPad or Apple Watch and a valid form of identification to the TSA Agent at security to proceed.Can you use mobile boarding pass to get on plane?
Flights eligible for boarding with a mobile boarding pass. On some flights, if you're eligible for online check-in, you can use a boarding pass on your mobile phone to board instead of a printout.Swap Paper for Mobile Boarding Passes
Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
Images: Sora Shimazaki, Andrea Piacquadio, Amina Filkins, Karolina Grabowska