If the government wanted to control population levles, then sure, this might be a good tool. But in itself it is only a slight improvement over existing methods, making it easier to micromanage population control. If an oppressive government wants to control the population, they already have the tools to do so. I don't see what this does to change that. What it might do is make it easier to do so clandestinely *in theory*, but in practice that case seems unlikely.