Yes. The N required for a convincing claim would be the same as for any method of data collection. Depends largely on the number of ‘cells’ comparisons. If you just want to describe something then 100 or 100s of cases. If you want to compare two or more somethings then 00 or 100s of cases per group/arm.
See attached and
Gorard, S. (2013) Research Design: Robust approaches for the social sciences, London: SAGE, ISBN 978-1446249024, 218 pages