Was there ever any wide spread usage of putting people under floors and inside walls to spy on people. Im not just talking secret passages in major buildings. I am specifically referring to common tabs being kept. Way back before electricity in the wide world of peasantry and [censored] jobs.. were people made to spend days and weeks within walls or under floors to spy on the common peoples words against powers at the time?

This is something I wonder about lately, because over the course of history, we can establish what we can off of writings left behind or what we can fathom off of modern science. Something like this that takes a consideration of the course of time condensed to a daily stretch of time for tasks to be involved in just to survive.

Could it be so uncommon to assign people to servitude of eaves dropping in such conditions?

Umm... why would they? Who would go through the trouble of hiding in a wall or floorboard to hear what peasants have to say?

Don't believe so.

From what I've read informants and agent provocateurs were the main method for gathering intelligence rather than physical surveillance.

it was a concept of reasoning. i can not specify time period. i can not specify monarch or power. but.. the intention .. of all other flagrancies endorsed... could not a super power pose a lesser to such a life???

a crude depiction but... a ruler to a subpower... a subpower to an achiever... the achiever to the ranking resource... the resource to the reprimander.. and so on.. as it may alternate... a line of reason.. that power had extorted persons to live in such circumstnaces. i am not trying to adress the inhumanity or any such beliefe of law or republic by those conditions. rather the plausability that one could have entirely... conditioned people to live under such regards... it could have been common ground?

Well, you have the Stasi in East Germany. They had over a quarter million informants/employees/etc.