According to Osho, you can meditate by gazing at a person (even the master) to taste peace and silence, but don’t mistake that soothing effect for the real work. Pair it with mirror-gazing into your own eyes, which exposes the ego and mind and strengthens watchfulness. Do both, not as substitutes; each method has distinct consequences.
Looking at someone can calm you, but also look into your own eyes in a mirror to see your mind and grow alert.