I am not suggesting the utilization of these for nefarious purposes.... But with all the insanity as of late, and the prospect of what may be following.....I'm just saying.  

While I know amazon is on most everyone's shit list......the link provided is just a suggestion of the type of bag that folks might want to consider.

https://www.amazon.com/dp/B01A7MACL2/ref=cm_sw_em_r_mt_dp_nw4aGbPG92BD6

As those of us begin to get more active as it pertains to getting together, a bag like this will prevent devices from tracking location and linking them like what happened as described in the thread below:

https://www.ar15.com/forums/general/How-was-this-done-Massive-antifa-data-dump-/124-2390529/

...or you could just leave your phone at home. Then there aren't a bunch of phones dropping off the net in close proximity.

No one said to do it in close proximity to the meetups.... Shortly after being en route, or prior to departure would suffice.

Aluminum foil works too

Do you wrap your phone in it or make a hat out of it?

Yes.

I think for general meetups for lunch or a beer, it's less of an issue, but I can understand the precautions.  It's not just big bro either.  Where I work, you can't take your phone or any device that receives signals into the building.  Most people have apps that already compromise their data and location and they're running all the time.

ROCK6

If you own a cell phone or a vehicle built after 2015 there is no OPSEC.

Start walking and using smoke signals.

Hence the phrase..... "to the extent possible".....Why make it easy for anyone?

Cell phones can be left behind.
As for the vehicles...if one were concerned about it, they could disconnect the GPS antenna...

This. Anyone carrying their phone on them while doing hoodrat shit kinda deserves to feel the wrath of modern technology.

ETA this is why burner phones exist

Devildog, the honey pot was successful because the antifa actors had their phones set to connect to any open wifi service it detects. So the honey pot crew drove around with an open wifi and logged everything. If that one setting was off they would have been fine.

The feds are doing the same thing with the stingray devices which take it to the next level by impersonating a cellular tower and intercepting cellular data.

Turn you phone off before putting it in the bag or it will run the battery down searching for a signal.

Secure reliable comms are on everyone's mind right now. There's no magic bullet. Secure comms are complex to set up. Using a provider may simplify the setup but then you never know what the provider is doing on the back end, if there's a back door, or if you've been infiltrated.

Covered by 45 years....

Get both.

Agreed 100%....which is why I recommended the most basic of steps.