Burner PAYG phone - I top it up from my burner bank below.
Cash card from a different bank
Pre-Pay credit card for hotels, car hire, taxis etc.
Virtual machine in the cloud / USB stick
Safety deposit box at local storage place e.g. Shureguard
I use a cheap android phone with a giffgaff sim, that I only use for punting
I set up an account on Metro bank a while back, and regularly pay small amounts £50 Per month into it, and only use this card for punting cash. I hide this card in one of my shoe soles when on assignment.
I make use of rental cars
Virtual machine - I use vmware - I also have an instance in Amazon EC2
I started using virtual machines about 10 years ago for banking and covert purposes.
I tend to use linux, as it's what I'm used to.
I use a password manager like lastpass to handle all my logins to AK,UKP, SS, etc, so I never have to remember any passwords. I use my punting phone to authenticate me initially.
I boot my VM, and it gives me a desktop that is totally separate from any machine. I also use this for red tube/pornhub etc., and store photos of my handiwork
When I visit AW
I record the info
I use google keep to hold a list of numbers as you can dial from the app, and take notes.
Amazon EC2 - https://aws.amazon.com/free/
lastpass - https://lastpass.com/
The rest you can google.
I store all my punting paraphernalia in a readily accessible security box with 24hour pin access.
I'm often working away in Hotels, but if at home, I might go out to a local club, soccer etc. I go to my security box, take out
punting cash card
on return, swap out my civilian kit.
Excuses - I'm lucky that my job takes me to places at all hours, and I have people that can give me good cover, so i don't have to lie about a soccer match etc.
Goto gym, have shower (to remove residual perfume / odours) , then a workout, and no shower (so I have my own odour) and return home / hotel.
I have several profiles
One that I use very carefully, and protect, and never disclose on forums.
Other disposable ones that I use for reconnaissance to select my targets, and then if sure use my main high feedback to book providers.
This works for me , I am disciplined with a military background, I'm a bit of an IT geek. I keep tuning my methodology.
Hope this has been of interest / some use, and i welcome other ideas shared,