ZXing Library Expert here!!
Upon checking your requirements, I'm sure my skills will deliver the most compatible outcome for this job. I am an expert mobile app developer with 6 years of experience with both iOS and Android.
This will be good opportunity for both of us, you will get expert developer, and I will get great customer.
I'm fully dedicated onto your project, can devote my full time to complete the job on time.
Cheers!