A name badge can make introductions easier, but a crowded form on a sticky label can also ask people for information they did not expect to provide.
Start with one useful field
Offer a space for the name someone wants used during the event. Explain that badges are optional if that is the organiser’s policy. Do not require a surname, employer or personal detail merely because there is room on the label.
Make the station easy to understand
Place a completed fictional example beside the blank badges and provide pens that are legible from conversational distance. Let people write their own badge or ask for assistance without having to explain why. A badge should support a conversation, not replace asking how someone wishes to be addressed.
At the end, provide an obvious disposal option and avoid collecting used badges unnecessarily. Before repeating the event, ask whether the labels were readable and whether the optional nature was clear. Those practical questions offer more useful feedback than assuming every participant experienced the same comfort with wearing a name.