The eBillett-app simplfies your ticket purchases. You can add your favorite venues and see their program.
When you have found something interesting you can easily purchase tickets. If you have a creditcard store the payment is easily completed with touch-id.
When the purchase is completed the tickets are stored on your phone. You can show these at the entrance. There is no need to have a paper printout. It is also possible to add your ticket to Wallet if you are an iPhone user.
You can download the app from App store or at Google Play