Short answer: 100+
The Basic Technique was not always called the Basic Technique (“BT”). In earlier versions of the website zeeplusplus.com, it had no name or it was called “the technique” or “the first technique”. Over time, changes were made to the BT.
The BT became easier to learn, for example. Over time, the name was changed.
Over 100 women have used the BT or its earlier versions to experience overlapping orgasms.
The BT is still changing in response to feedback. If you have suggestions to make the BT easier to learn or to be more effective, please send those suggestions along.