QR Codes are a great way to share data and information with others, even when no Internet connection is available. Most modern devices either come equipped with QR readers in-built, or freely available.
The default link here is the GXWeb Jigsaws and Quizzes, but you can use it as an alternative to sending your assessment data via email, web or share with others in your class. You can even use it to send your own messages!
Martin Bunder, Bruce Bates and Stephen Arnold (2024): The Summed Paperfolding Sequence (Complete version: Bulletin of the Australian Mathematical Society: Published online by Cambridge University Press: 25 March 2024)