Looking at the e-ticket it looks like there will be an addition of e-cash at some point which would make sense, just have to remember to turn NFC off when that happens so it doesn't charge Google or apple pay by mistake bit like when using the free Nero coffee on O2 priority.

If they do include eCash into this, then you'll need to have NFC on as that's how the readers work. I can't see the club outfitting every till with another reader to read the QR code (they'll need to keep the existing ones for those who can't use Mobile ticketing). There woud also need to be extra IT back-end stuff too.  So, if they do add eCash (see AJQuin's post raising doubts about that), then you will need to launch Apple or Google play, and select the pass as the payment option either each time you use it in the Stoop, or switch it to be default while you're in the ground & back to your normal default card when you leave.

Why go to the hassle? Well depends if you get there in the first hour of game and how much you spend in that time.
The refund to your ecash on the amount you spend in the first hour is 20% so if you only have a pint then approx £1.00 so maybe not worth the hassle. Buy £50 of merchandise in the shop and get £10 back, I would say worth it!

I guess it'll depend on your spending profile. I generally will only occasionally spend a lot in the club shop. I can see the benefit of it in some situations, such as parents wanting to control how much kids can spend on "sweets & fizzy pop" for example!

For me, this makes it easier to consider leaving my wallet and card at home. On my phone I can:

• Pay for my car parking at the train station
• Have my train ticket and Network Railcard for the train trip to Twickenham
• Pay for my newspaper at Reading Station on the way through
• Listen to some music or a podcast on the journey
• Pay for Lunch in the pub before the game
• Get into the Stoop
• Buy beers in the ground

About the only thing I won't be able to do is pay for the Programme!

That's why I always have a charge bank with me, just in case. If I know the battery's getting low, I can plug the charge bank into it & top up, and they both still fit into my jeans pocket without a problem ;)

Yeah, I think that as smartphones and contactless cards like debit cards & Oyster cards become the norm, the long-promised cashless society will move a step closer. Plus, as you say, if you can remove the costs of paper tickets & receipts for things, that helps both in admin costs and also in terms of needless waste.

had to drink virtual beer a couple of times !      run out of ale ? .. never heard anything like it a Rugby Club .

They ran out of red wine at the bars at Marcel Michelin a couple of weeks ago!!

So, it all worked well. Ticket went into Wallet app on phone. I get to the gate. I open Wallet and show ticket. A very helpful steward explains to me that I should put the phone into the hole where I would usually get my plastic ticket scanned. It flashes green. I get in.

Very easy.

I had a few issues with getting the scanner to recognise the QR code on my phone. Turns out with my Pixel 3 you have to hold it to the top of the card reader inside. Holding it towards the bottom of the card reader slot didn't work. It took a few attempts to get through, but I was early enough that I didn't really delay anyone getting into the ground. Did anyone find they had to hold their phone to the top of the reader?

I used mine on the last two games. It was a bit tricky getting the QR code to read. On my Samsung s9+ phone it is enabled within Google Pay.