3. An Unconscious Habit or Nervous Tick 
Sometimes, it means nothing at all.
The person may have a habit of touching palms more than usual during greetings.
Could stem from anxiety, excitement, or simply not realizing they’re doing it.
If repeated with many people, it’s likely not intentional or symbolic.
Context matters: Is it only with certain people? Does it happen with eye contact or a smile?
4. A Sensory or Neurological Response 
Some individuals are highly sensitive to touch (a condition called synesthesia or heightened tactile awareness) and may respond instinctively to skin contact.
They might stroke the palm due to an unconscious sensory feedback loop
Rare, but possible — especially if paired with other tactile behaviors.
5. Cultural Nuance or Regional Custom 
In parts of the world where physical touch during greetings is more common:
A light palm touch may simply be part of a warm, expressive handshake.
Not sexual or coded — just a cultural norm for showing friendliness or emphasis.
For example, in Mediterranean cultures, handshakes often include a shoulder tap or forearm touch — so a palm stroke fits naturally into that expressive style.
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