I haven't taken paper vouchers to the store for years, I enter the long reference numbers when online. Never understood why active codes were not showing online for automatic selection. I've not heard from Tesco yet, but would be quite happy to have codes emailed to me. I could copy & paste them which would be much easier. Forcing people to have smartphones to take advantage of store offers, such as Clubcard Price, as some supermarkets are doing, would be out of order, specially in the current climate.
I’d forgotten about the above post, but it appears Tesco have finally moved things on a bit, because when I applied the latest cash voucher today, it automatically added a load of miscellaneous voucher numbers presumably still time valid to todays order. A staggering £17.50!