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The New GKM and GK100 Glass Chips
GKM and GK100

By Massimo Bianchi

It was back in 2003 when we first had to deal with the Texas Crypto 1 transponder, and when we first realised that the antenna appointed to a ‘chip’ was simply not powerful enough to satisfy its communication requirements. To solve this problem, we opted for the ‘electronic head,’ with a much more powerful antenna.

This is how we started our first TK series (TK24, TK30, TK40, and TK60), which in turn led us to the very first universal transponder, assembled in the TK100 head.

The final versions of Keyline heads were achieved in November 2015 – with the launch of the TKM head. The worldwide, unique, electronic head able to clone the transponder Megamos Crypto (ID48) – applied in over 200 car models.

Today, our proven experience with transponder cloning technology has led to other accomplishments and further developments in automotive products. Of course, I am talking about the glass transponders GKM and GK100.

How GKM and GK100 are made:

 They differ from other transponder solutions due to their external glass case and their compact dimensions: 0.9 inches in length for the GK100 and 0.5 inches for the GKM.

Another characteristic that makes these products unique is that there is no need for additional tools like batteries for them to function. Just like the electronic heads, the glass chips are charged from the electromagnetic field, generated by the antenna in the ignition lock. Meaning we can be confident when saying that these products have an unlimited operation life.

Cloning capability

 With GK100, the user can clone the transponder Philips Crypto (ID46) and Texas; fixed and crypto (ID4D and ID4C).

The GKM can exclusively clone the transponder Megamos Crypto (ID48) and fixed code (ID13).

GKM and GK100 together guarantee a wide range of vehicle coverage, with a circulation that equals 95% of cars, motorcycles and trucks – with a success rate of 99.5%.

How they work

Fundamentally, they work in the same way as an electronic head. But, the sniffing function is integrated into the glass chip (so there is no need for ‘snoop’ like with Silca products), and the glass chips can recover the data from the immobiliser box, with a sequence of attempted ignitions – a function that is normally performed to start the engine. This is done three times to clone the Philips Crypto (ID46) and eight times for the Megamos Crypto (ID48). That function is not required by transponder Texas, fixed and crypto codes, because exclusively the cloning tool does the entire calculation procedure.

Another very important aspect of this technology is that the glass chip is rewritable, and this can be done a limitless amount of times, without affecting the functionality of the cloning.

Conditions of Use

GKM and GK100 work perfectly on 884 Decryptor Ultegra and 884 Decryptor Mini, and thanks to Keyline software, they can be used in parallel with the TK electronic heads.


Due to their small size, GKM and GK100 perfectly adapt to the products that are dedicated to cloning functions, such as Pod keys, Shell Keys and Flip keys. They can be accommodated to each specific chip holder, which has been designed to support the communication between the antenna in the ignition lock and the transponder in the key.

GKM and GK100 Glass Chips are now available at Tradelocks!