Stringing sticker with app control. The modern racket management.
With the help of the stringing stickers all tennis rackets can be personalized and managed.

Which string is on the racket and how hard was it strung?
How old is the stringing and when should it be restrung?
What is the string thickness and length of the long and cross strings?

This and other information can be stored via the free app. The owner/admin of the QR sticker can then overwrite this data again and again with each new stringing. This means that only one sticker is needed for each tennis racket to be personalized. Stringers, coaches or sports shops can use this app to add all customers to a database. Individual players or families with several rackets always have an overview when the rackets are managed via the app. The racket can be scanned with any QR scanner. The information can be retrieved at any time. For example, during a tournament or on vacation, a stringer can read the data and string the racket again immediately.
Iphne App Store
The app is called QRSticker and is available in the App Store and on Google Play. If you don't find the app right away then write QRSticker together. Alternatively you can also use the two QR Codes to get to the app. Just scan the left for iPhone and the right for Android.