Dialog 50¢ SoC Targets Disposable Bluetooth Market
eetimes.com
eetimes.com
Edit: None of the other mentioned things //should// be disposable, which is why my mind went directly to cheep crap you buy on vacation because you forgot or broke the real thing.
To be noted that though the title suggests disposable, these could be used in hardware designs that allow for distributed control and sensing, removing need for wires.
For example, I could have them in a building automation system with, each light having an independent bluetooth hardware.
If you ever plan on using a BLE in a cell phone accessory, regulatory costs may break the $1M mark by 2020. That's cost to certify the accessory for use in various territories
Best case scenario and all that. :)
For something that is designed for a personal area network, the range suffices.
The problem comes in with poorly designed products, cheap antenna designs, or just space limitations. BT Earbuds don't exactly have a lot of space in them.