Jeep Wrangler Key Fob and Keyless Entry (844)FOB-KEYS
Jeep Wrangler key FOB
If your Jeep Wrangler was made in the years 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 or 2017, it might use the FOBIK key which has no key blade, and incorporates a remote that slides into a socket on the dashboard.
The keyfob is more expensive then a regular transponder key, however there is a non-remote (POD) key for these vehicle as well.
Jeep Wrangler Keyless Go
If your Jeep Wrangler was made in 2011 - 2017, you vehicle might use the "Keyless Go" a proximity fob (pushbutton-start). Loosing a keyless entry device is just like misplacing a transponder key and the vehicle need to be reprogrammed.
How To Replace Jeep Wrangler Key Fob Battery 2013 2014

