Mature And Young Thumbs -

: Typically use both thumbs for high-speed typing or a single thumb for "swiping".

: More likely to use a "hunt and peck" style, often holding the phone with one hand and typing with the index finger of the other. "Thumbs" in Gardening (Maturity vs. Youth) mature and young thumbs

: A person's "texting thumb" often reveals their age generation. : Typically use both thumbs for high-speed typing