The first PSKs were initially an experiment. Marco and Christoph tested materials, improved the scales, and tried out new variants again and again. But at some point, they wanted to know: Does the idea also work outside their own apiary? The answer was to come at a trade fair. At EuroBee in Friedrichshafen, they presented the PSK to a larger audience for the first time. For the two founders, this was a special moment because suddenly experienced beekeepers stood before them, took the cards in their hands, asked questions, and tried the system themselves. Many visitors understood the idea immediately. They took the pins, looked at the scales, and said, "That actually makes total sense." The feedback was overwhelmingly positive and confirmed Marco and Christoph in their assumption: The PSK solves a real problem in beekeeping. At the same time, a new idea emerged at this fair. Many beekeepers found the analog system excellent but also wished for a way to store the data digitally and analyze it long-term. This led to the next major development step. A third man joined the team: Tim, a computer scientist from Göttingen. He developed an app that can automatically recognize the position of the pins on the card. With a simple photo, the PSK can be scanned, and the app transfers the information directly into a digital history. This created the system that defines PSK Beekeeping today: a robust analog documentation directly at the apiary and intelligent digital analysis in the background.