I'm not an expert on this. But other than the live auction all bidding is done on-line. To bid on-line you need to be registered on the bidding site. So you would need a user name and password. I assume you could borrow someone else's phone and log on with your user name and password and see current prices and enter a bid.
This was all set up (with a lot of effort) by Barry Sherwood and any decisions he makes are final and override anything I might say as this is a new procedure. If you can't attend the live auction then I believe Barry will accept proxy bids to use at the live auction.