First, you couldn’t trust houseplants & potato chip bags.
But that’s not what’s going to do you in.
No, you’re doomed because of your super-fancy smart phone.
Not from the microphone or the GPS (although that’s not doing you any favors, privacy-wise), it’s the phone’s gyroscope, which automatically rotates the screen when you rotate the phone – it lets anybody eavesdrop on you [emphasis mine]:
The MEMS gyroscopes found on modern smart phones are sufficiently sensitive to measure acoustic signals in the vicinity of the phone. The resulting signals contain only very low-frequency information (< 200 Hz). Nevertheless we show, using signal processing and machine learning, that this information is sufficient to identify speaker information and even parse speech. ***Since iOS and Android require no special permissions to access the gyro, our results show that apps and active web content that cannot access the microphone can nevertheless eavesdrop on speech in the vicinity of the phone.***
This sort of thing is why I have a superunfancy blitheringidiotphone.
Oh, and at the link, you can also scroll down to find out what else that stalkerment officials don’t need permission to access.
If you need me, I’ll be over here under my tinfoil tent…

Do those free-for-the-begging Obamaphones have this capacity?
If not, why not?
What hath Gps wrought?!
The modern smartphone has capabilities that, if the government demanded we all carry one, and told us what it could do, anyone with any concern about privacy would refuse. Yet we carry them willingly.
I only own a cell phone I bought 9 years ago so I am constantly concerned someone may hack my calculator, stopwatch, or alarm clock apps on it.
…Not to mention Facebook, Instagram, Twitter, etc. When A.T.M. fees were first introduced, I worked at a credit union and we were told by the service providers, and I quote: “People will pay for convenience”. Americans are so addicted to convenience that they do not even know, and do not want to know, the price which they are paying for it.
Oh yeah, and if you think that you have ever posted on this site and your name is not in Valarie Jarrett’s unassailable computer….
Hey, Valarie, we love you, babe! Well, maybe not we!
Or me!