Size limit of object, vl53l0x

what is the size limit of an obstacle in order to measure the distance accurately for v53l0x??
does it sense the distance of objects with less surface area as our fingers??

I moved your thread to the “Sensors” category since it seems more appropriate.

With a smaller surface area for the sensor to reflect off of, I suspect you might have a smaller working range. How well it would work will probably depend heavily on the reflectivity of the object.