Access Bars is part of a larger movement called Access Consciousness which works on the concept of energy healing coupled with verbal healing sessions. The bars are 32 points on the head that, when touched lightly with finger tips by a trained practitioner, supposedly release the electro magnetic charge that gets stuck in the brain across lifetimes. The electro magnetic charge connects itself to various thoughts, feelings and emotions during several lifetimes and makes one who they are, today. This charge needs to be released so that individuals continue to create new realities for themselves, having let go of old stubborn beliefs through an Access Bars session.
How does it work
According to the official website of the founder, the bars hold information of lifetimes in the form of beliefs and thoughts. A session is given to activate the bars so that long-embedded thoughts, beliefs, emotions and feelings get released to give way to newer realities. The modality offers what they call 'tools' to help with the clearing process.
Coupled with this energy healing session, a verbal healing session is also given, to facilitate the release of these beliefs. The verbal healing session revolves around asking questions and creating the basis for becoming aware of multiple choices that are available to everyone from the universe. The goal is to move from asking the question to being the question.
Individuals who have received this form of healing claim to have changed their lives through verbal clearing. However, there are no studies around this modality in science or research that can validate this form of healing. A neuroscientist and Ph.D. from Arizona, Dr Jeffrey L Fannin researched and reviewed the process around Access Consciousness in 2015. Dr Fannin mapped the subjects' brain before and after their bars were run. According to Dr. Fannin, the brain changes that occurred after a bars session resulted in more brain activity than what he has noted in average meditation sessions. 
The origins of Access Bars goes only 30 years back to 1995 when Gary M Douglas founded this worldwide movement called Access Consciousness, which works on the basis of certain principles. The movement assumes that one is never wrong, one knows everything, and that one's consciousness can create one's own reality. There are many such alternative healing therapies that work with words to induce positive thoughts, such as affirmations by Louise Hay based on new thought philosophy that works on words to change perceptions. Access Bars serves to clear the 'known' and 'unknown' energies around one's beliefs.
Cult and Controversy
Several individuals have come out and claimed that Access Consciousness is a cult out there to loot individuals of their savings while playing with their minds. One needs to complete a level and go to the next for additional knowledge, akin to Scientology. Each level costs around 200 USD to 500 USD and includes online teachings, verbal classes and other modes of training, including touch based healing. One of the erstwhile Access Bars practitioner, Jane has made shocking revelations about the content in the journey to becoming a practitioner.  Jane's revelations about Gary Douglas's statements calling kids 'sexy' led to a huge controversy and one of the blogs published by Gary on Access Consciousness website was pulled down after this revelation. Post this, Gary Douglas defended himself in various forums and claimed that his statements were taken out of context. The Houston Press managed to access some of the restricted content of the group and finally ended their news item with "So here's what you should take away from this: The story is just a story. It is not a reality. It is not a truth. It doesn't mean anything."  
Also read "Ricky Williams Is in a Cult" 
This article "Access consciousness" is from Wikipedia. The list of its authors can be seen in its historical and/or the page Edithistory:Access consciousness. Articles copied from Draft Namespace on Wikipedia could be seen on the Draft Namespace of Wikipedia and not main one.