Can a tag open a shared board or document?
Yes. An address written on a tag opens on any phone with no setup, which makes it the right mechanism for a station several people use. The obstacle is the destination rather than the tag, because most team tools ask for a sign in that the tap cannot supply.
Why the tag part is easy
A tag holding an address needs nothing configured on the phone that reads it. Any phone, either platform, no application installed for the purpose.
That is exactly the property a shared station needs, since you cannot ask every person who passes to set something up first.
So the mechanism is settled before you start. The interesting decisions are all about the destination.
The sign in is the obstacle
A board, a wiki page or a document inside a team tool is behind an account. The tap opens it, the tool asks who you are, and on a phone that has never signed in the answer is a login screen.
For a colleague whose phone is already signed in, this is invisible and the automation feels magical. For everybody else it is a wall.
Decide which audience the tag is for before writing it, because that decision changes the destination entirely.
Where these actually work
A page that needs no account, which is the version that works for everybody: a public page, a form open to anyone with the address, a read only view published deliberately.
A team tool, which works well for a team whose phones are already signed in, and not at all for a visitor.
The failure to avoid is a tag on a wall in a public area pointing into a tool nobody outside the team can open. It looks broken and it is the most common version of this project.
Keeping it correct
Documents move. Boards get archived, pages get renamed, and the tag keeps pointing at where the thing used to be.
Point the tag at an address you control, on your own domain, and have that address redirect. When the document moves you change the redirect and the tags stay as they are.
This is the single technique that makes physical tags maintainable at all, and it costs nothing to set up before the first tag is written.
Keep a note of which tag points where. A wall of identical tags with no register is a wall nobody dares change.
Frequently asked questions
Will a visitor be able to open it?
Only if the destination needs no account. A team tool will show them a login screen and look broken.
Does everyone need an application installed?
No. A tag holding an address opens on any phone with nothing installed, which is why it suits a shared station.
What happens when the document moves?
The tag breaks, unless it points at an address you control that redirects. Set that up before writing the first tag.
Can the tag hold the login?
Never. A tag is readable by anyone who walks past it, so anything on it is public.