to remember the email or text number of your regular clients, ATF,  ( (or what ever you call your frequent clients) ?

Of course.  It's easy to recognize an email address that you're very familiar with, and even without saving someone's number, I'll recognize it if he texts or calls me a lot.  

She has my number memorized. She knows who I am when I text her.

frequency of contact.  If you're a once a week regular, of course she knows who you are.  If you're a three times a year regular, she might have to check her records, if she keeps any.  At least this has been my own observation over the years.  

It's ironic this questions comes up because I am in the middle of overhauling some of my policies regarding privacy and security. I travel frequently, specifically internationally, and with facial recognition software being used and border agents/customs being able to take phones and laptops to search, I just take issue with people saving a ton of information. With that, I am looking at different ways to protect not only my clients and potential clients but also me. I just believe in being prepared.  

to save his info?  

obviously.  that's why   I asked the ladies and seek their specific opinion but since you answered... how do you keep ladies info on your phone? Do you save the number? add a fake name? (lol other than their already fake escort name)

Absolute secrecy is not a requirement for me. I have a separate hobby phone, which stays in my car. I don't exchange numbers with girls until AFTER I have seen them to assure myself they are not BSC. Then I just have their first name and phone number.  Most undies I see are email or PM contact the first time. Agency girls are by text to the number in the ad. Each girl has their own dedicated phone number so nothing to keep track of.

you'd think it'd be easy but... maybe for some more than others?

While there is a slight difference between having an eidetic memory or photographic memory, both of mine are well developed. With the eidetic part, I can use a memory to remember the person and the nickname I give them to associate with that memory. So as long as the client emails or texts me with their nickname... it will all come flooding back.

the call goes straight to her bank account.

Special ringtones for sure!!!