How does mobile bidding work at a charity auction? QR codes, no app needed

Mobile bidding means guests bid from their own phones instead of writing on paper bid sheets. At modern charity auctions it works without any app or account: a guest scans a QR code, a web page opens, they type a name and a bid, done. Here is exactly how it works and what you as an organiser need to prepare.

The guest experience, step by step

• Beside each lot, or on each table, stands a card with a QR code.
• The guest points their phone camera at it. The lot page opens in the normal browser. Nothing to install, nothing to sign up for.
• The page shows the lot photo, description, estimated value, current highest bid, and the minimum next bid.
• The guest enters their name and email once, taps a bid, and confirms.
• If someone outbids them later, they get a notification or email and can raise again from anywhere in the room, or from the bar, or from home.

Why it beats paper bid sheets

Paper sheets have three quiet problems. Guests must physically return to the table to check if they were outbid, so many simply never do, and bidding dies after the first pass. Handwriting creates disputes: was that 85 or 35? And at close, volunteers must decipher and total every sheet by hand while guests wait. Mobile bidding removes all three. Every outbid guest is told instantly, which is exactly the moment they are most likely to bid again. Amounts are unambiguous. And the close is automatic: when time runs out, the winners are simply known.

What organisers need to prepare

• Decent connectivity. Guests use their own mobile data, so you do not need to offer wifi, but check that the venue is not a signal dead zone. If it is, ask the venue for the wifi password to print on the table cards.
• Printed QR cards. One per lot beside the item, plus a general card per table. Print them large; A6 is the practical minimum.
• A one-minute explanation from the stage at the start: scan, name, bid. Expect a handful of guests to need help; brief two volunteers as roving helpers.
• A fallback for the phoneless. One volunteer with a tablet can place bids on behalf of any guest who prefers it. In practice this is one or two people per hundred.

Does an older audience cope?

Better than most organisers fear. Scanning a QR code became universal during the pandemic years, and the bidding page involves nothing harder than typing a number. The two helper volunteers cover the rest. What actually matters is the size of the text on your table cards and one clear demonstration from the stage.

What it changes about the evening

Bidding stops being an errand and becomes a background game running all evening. Guests bid from their dinner seats. Quiet people bid more, because nobody sees them do it. Totals climb during dessert. Organisers see every bid in one dashboard instead of forty paper sheets.

This is exactly how auctiontool.ai works: a QR code per lot, bidding in the browser with no app or account, live totals on the big screen, and payment emails the same night. The whole flow is shown step by step on the how it works page.