In a study conducted in 2012, researchers investigated the way individuals perceive and recognize shapes associated with themselves, others, or neutral words.. In the primary task, 18 participants had to label different shapes as themselves, or a friend or a stranger, and later recognize if shapes and labels were correctly displayed. The analytical approach involved comparing mean reaction times for each matching judgement with ANOVAs. Confounders like right-handed and vision were controled. Among other hypothesis, the primary hypothesis which posited that shape recognition would be faster with prior self-association (experiment 1), was supported by the results with a large (p. 1107) effect size. This overview provides a concise synthesis of the most relevant results. For more details, please refer to the article page.
It is likely that using a specific shape as visual coding to represent the user will enhance the perception of that shape.
Sui, J., He, X., & Humphreys, G. W. (2012). Perceptual effects of social salience: Evidence from self-prioritization effects on perceptual matching. Journal of Experimental Psychology: Human Perception and Performance, 38(5), 1105–1117. https://doi.org/10.1037/a0029792