Mazda 2 Additional Key Programming--Yes you can, with ForScan!

You can program extra transponder keys through the OBD2 port using the free ForScan program on a Windows laptop, an OBD2-to-USB cable supporting ELM-327, and a key blank bought off Amazon or EBay for $10-15.

Can also be done with an Android tablet and a Bluetooth OBD2 adapter, I believe, but I haven't tried this.
FYI I have no relationship with Forscan or any of the products or services listed. I'm just a guy whose had numerous Ford vehicles that use the PATS system and figured out how to use Forscan to program chip keys to work in the ignition.

I don't know exactly which Mazda years and models this approach applies to, but it should work for all Mazda 2, 3, 5, 6, etc. vehicles that use the same PATS system as Ford.
In my case, a tenant has a 2013 Mazda 2, and a requirement for her to park in the driveway is to have an extra "valet key" in our front closet, so we can move her car if needed and she's not available to move it. So, I looked into it, went for it, and it worked. $50 of key blanks and licenses to get two fully working keys has to beat whatever the dealer or locksmiths are charging.

I covered it all in more detail here.

I had a hard time finding out if the 2013 Mazda 2 used PATS and if this approach would work. I decide to take a flyer and IT WORKED!!

I found this about what Mazda vehicles use PATS and this approach may work with:

"The PATS (Passive Anti-Theft System) key system is used in all Mazda vehicles starting from the 2003 Mazda6, 2004 Mazda3, RX-8, 2006 Mazda5, and MX-5, as well as all other models introduced after 2006. Additionally, it applies to specific earlier models like the 1998-2002 626, 2001-2006 MPV, and 2001-2005 Miata."

More, from MazdaServiceInfo.com and other sites:

Mazda Vehicles with PATS Key System

The Passive Anti-Theft System (PATS) is used in various Mazda vehicles starting from specific model years. Below is a breakdown of the models and their corresponding years that utilize the PATS system.

Models and Years

Mazda62003 - Present
Mazda32004 - Present
RX-82004 - 2012
Mazda52006 - Present
MX-5 (Miata)2006 - Present
Mazda Tribute2001 - 2011
Mazda MPV2001 - 2006
Mazda 6261998 - 2002
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Model​
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Years of Production​
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Key Features of PATS

  • Functionality: PATS prevents unauthorized access to the vehicle by requiring a coded key.
  • Key Programming: New keys must be programmed to the vehicle's PATS system for them to work.
  • Diagnostic Access: Accessing the PATS system for key programming often requires specialized diagnostic tools.
This system enhances vehicle security by ensuring that only properly coded keys can start the engine.
 
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