Shin Jin in Chinese / Japanese...

仁神術 is Jin Shin Jyutsu or Jin Shin Jutsu.

This is a practice of calming the mind and clearing the flow of Qi energy in the body. Jin Shin Jyutsu has some commonality with the practice of Reiki.

A good translation of 仁神術 would be “Benevolent Spirit Method.”

We can break that down into all of the possible meanings:

仁 = benevolence (esp. as a virtue of Confucianism), consideration, compassion, humanity, charity, kindness, or virtue.

神 = deity, soul, spirit, mysterious, psyche, god, divinity, spiritual powers, deva, divine, spiritual, or supernatural.

術 = way, method, means, art, trick, or plan. The correct romaji for this 術 Kanji should be “jutsu.” However, in martial arts, this is often written “jitsu” but in this case, “jyutsu” became common.

神 is the simplest way to write spirit in Chinese, Japanese Kanji, and old Korean.

This single character alone will conjure up ideas of the spiritual world. 神 can also be translated as “vital awareness” as in the fact that one must know they exist to exist (I think, therefore, I am).

Other translations include:
God, deity, mysterious, divine essence, lively, spiritual being, divinity, supernatural, soul, mind, nerves, and energy. In some extended context, it can mean genius or unusual.

Japanese romanizations vary a lot when this character is combined into other words. However, shin is the original pronunciation taken from Chinese into Japanese. You'll also see it romanized as kami, gami, jin, and a few others, depending on context.