Here is the instruction on programming key for VW Golf GTI 2007 year by using SuperOBD SKP900 key programmer via OBD2 within 4 minutes.
Step 1: Read Pin Code
Connect OBDII plug with vehicle

Connect Main cable with SPK900

Select IMMOBILIZER function

Select vehicle brand: VW

Select Read Pincode 1
Loading


Select read pin code from system 1-5
Here we select Password reading from SYS3 (System 3)

choose OBDII adapter, turn ignition ON
Communicating
Programming system,please wait

SKP-900 read Golf GTI pin code
Step 2: Program Key
Back to VW menu

Select KEY MATCH

Select system: Key program SYS3
choose OBDII adapter, turn ignition ON
Communicating

SKP900 requires to input password to access, manually enter pincode just read
Confirm pincode
Programming system, please wait

Check current number of keys:1

Enter number of keys keys you want to program and confirm (maximum 2 keys to be programmed)
Programming in process

Use all matching keys to turn ignition ON

Key Matching finished
Test the new programmed key
Done!