Label bags, laptops and keys with a code a finder can scan to reach you, without printing your details in the open.
The point of the code is to be contactable without printing your details on the outside of the bag. Whatever it points at is what a finder sees, so put a way to reach you there and nothing else you would not want read by whoever picked the item up.
Enter content to generate QR code
The code carries the item, a description, how to contact you and an optional reward, as plain labeled text. A finder scans it and reads it on screen, with no app and no signal required. The trade is the usual one for a text code: it works anywhere, and everything in it is legible to anyone who picks the item up.
A laptop sleeve tag, and the code holds:
LOST & FOUND - Laptop sleeve
Description: Gray, 14 inch
Contact: Ana
Phone: +15550001234Four lines, all readable by anyone who picks the item up rather than only by the person returning it. The empty fields simply do not appear, so leaving one blank genuinely removes it.
A tag that carries only "Contact: 07700 900123" is enough for an honest finder and gives a dishonest one nothing. Your full name, address and workplace are not needed to return a bag, and a luggage tag broadcasting a home address while the owner is visibly on holiday is a well-known problem. One channel to reach you is the whole requirement.
A secondary email address costs nothing and can be abandoned if the tag ends up somewhere public. It keeps a lost-item conversation out of your primary inbox and means a scraped tag does not hand anyone the address your accounts are registered against.
A stated reward can raise the odds of a laptop coming back, and it can also turn a tag into an invitation to negotiate. If you name one, keep it modest and specific. Many people leave the field empty and rely on the fact that most finders simply want to return the thing.
Inside a laptop lid, on the back of a case, on the outer face of a luggage tag. A code on the underside of a bag is a code nobody sees. Cover it with clear tape or laminate on anything that will be handled, since these tags fail by abrasion long before they fail by fading.
As little as works: one way to reach you. An email address or a phone number is enough to return a bag, and anything more is readable by everyone who picks the item up, not only by the person returning it.
Luggage, laptop sleeves, cameras, instrument cases, keys, bikes and sports kit: anything costly to replace and easy to put down. The tag is worth most on items that leave your hands routinely.
Not on a static tag. If your number changes often, encode a dynamic QR code pointing at a contact page instead: repoint the link and every tag you have already stuck on stays correct.
It is readable by anyone at baggage claim, so use a number or address you are comfortable being seen. A secondary email is the common compromise: enough for a finder, disposable if the tag is abused.
It is optional and cuts both ways: it can help with expensive items and can also invite haggling. If you name one, keep it modest and specific.