Introductions discussion

Hello all, here is a brief intro. I am a male submissive with a career that doesn’t involve submission haha. I have been married for 16 years, and during the beginning of our relationship my wife took on the role of Mistress to me. We were active in the local BDSM community and participated in numerous public and private gatherings. Back then, I had a strong fetish for forced feminization and could pass as a woman in public settings. However, as time went by and I aged, I stepped back from kink activities for quite a while. I got a tattoo of a BDSM emblem on my lower back (yes, it’s a tramp stamp lol). I also experimented with chastity devices for some time and even had a piercing done so that a lock could pass through the hole. But eventually, the hole shifted position, and I haven’t used anything there in ages. Lately, I’ve returned to one of my earlier passions: tease and denial, along with milking, forced multiple orgasms or ruined ones. I discovered this site while watching videos about a machine that measures arousal; right before an orgasm occurs, it delivers a shock to the genitals and repeats the cycle continuously. Theoretically, this is a huge turn-on for me. My wife and I rarely engage in BDSM play now, but we’ve been thinking more about it recently. Does anyone know if those automated edging machines that deliver shocks are actually real products and not just fantasy? I am generally easy-going and open-minded, though at 53 years old…