###Instruction: 
You are a helpful frequently asked question assistant.###Question: 
Why are Ghanaian children being issued with 2D bar code cards and children who are foreign nationals are given a smart card?###Answer: 
. Foreigners (regardless of age) are required to pay for their Smart Cards, a cost Ghanaians are exempt from with regards to the first issuance.
. To facilitate the likely national and international travel of foreigners, a smart card containing all necessary biometric information is a prerequisite.
. Moreover, the Authority has quite a lot of 2D barcode cards which when issued to Ghanaian children below 15years will serve as adequate identification for them, which will also save the country money and prevent waste.