Attaching Noopl to your phone and putting your phone in a purse or bag would make Noopl less effective for a couple of reasons:
1. Like all microphones, your Noopl is most sensitive to sound if you don't cover it up. That would be like putting your hands over your ears.
2. Microphones work better when they are closer to the source of the sound you want to hear. Noopl works best if your phone is out in the open, near you, or in the middle of the people you are speaking with. If Noopl is attached to your phone in purse or bag, you might have that purse or bag off to the side, on the ground, or hanging from the back of a chair — all locations farther away from the source of the sound that you want to hear clearly.