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integrated posyandu application with android-based communication technology. The use of RFID allows e-
KTP with the data collection process to be done quickly and accurately using an android smartphone (Fajri, &
Oktaviana, 2019). Meanwhile, Sari et al. (2018) proposed the use of e-KTP to conduct e-voting in general
elections using electronic media and the internet which aims to facilitate and speed up the selection process by
adding fingerprint identification as data validation (Sari et al., 2018).
However, in our study, here is developed a system which functions to reduce the use of money and save
resources. Its manufacture applies Radio Frequency Identification technology which aims to make transactions
easier by only using the electronic Identity Card (e-KTP) that has been provided by the government. This system
implements the use of e-KTP to replace the use of banknotes and coins which make transactions inefficient
because we have to carry a lot of money, causing inconvenience in transactions. This system is used specifically
for transactions in the store on a subscription basis as a member.

2. Methods

The method used in this research is design and implementation. The initial stage of making this system is by
designing in determining system requirements. At this stage, what needs can be prepared that must be met in
building a system that implements e-KTP as the basis of RFID. Figure 1 shows a block diagram of the system
being built.

Fig. 1. System block diagram

The following is an explanation of the function of each sub-block of the system block diagram: Arduino
UNO functions to process data read from sensors, RFID reader is used to scan E-KTP, finger print is used to
scan fingerprints, E-KTP is used as RFID Tag, customer or buyer is the person who will make the transaction,
admin is in charge of managing all systems and filling funds, Visual Studio serves as a display interface to
buyers or admins, and the database serves to store data from buyers and stored funds.
The system works with two sensors, namely Fingerprint and RFID reader which will then be processed by
Arduino UNO. When the user wants to use this system, the user must register himself in the form of an e-KTP
and fingerprint to the admin then complete the registration column. Once registered, the user can fill in a virtual
balance by exchanging real money to the admin according to the amount. When the virtual balance has been
filled, users can make transactions where the system will deduct the balance according to the price of the goods.
Withdrawal of balances must attach e-KTP and fingerprints to the tools provided as a transaction requirement.

E- Proceedings of The 5th International Multi-Conference on Artificial Intelligence Technology (MCAIT 2021) [7]
Artificial Intelligence in the 4th Industrial Revolution