A silent auction from a phone.
Guests scan a card and bid. Winners are emailed at close.

1A link
Send it, paste it, print it.

2A deadline
Every bid on one board.

3Everyone hears back
Winners and the rest.
What they see
Send the link. This is the other end.
A number, a name, an email. Thirty seconds, no account, and they hear back either way.