Fresh take on that idea: one-off container with reactive material that will change colour when the container gets unsealed reading in the same manner as litmus paper.
Sub-dollar range for each.
I’m actually gathering a grant to get started and open to any kind of cooperation.
Fresh take on that idea: one-off container with reactive material that will change colour when the container gets unsealed reading in the same manner as litmus paper. Sub-dollar range for each. I’m actually gathering a grant to get started and open to any kind of cooperation.