Utilizing smart cards to achieve IoT-enabled lot traceability.

Introduction video of the case study.

Implementing lot traceability (management table) with smart cards.

Achieving lot traceability through the use of smart tags! Eliminating transcription errors with automatic writing.

Background of the implementation

Management slips were attached to each box, and additional information (lot numbers, quantities) was manually recorded on it at each process stage.

Approximately 180 management slips were being printed daily and attached to each box, leading to attachment errors. There was a need to address and improve human errors.

Occurrences of errors in filling out and transcribing

After printing the management slips, lot numbers and quantities were manually added, which led to recording errors. Therefore, it was necessary to address and improve human errors caused by these mistakes.

Difficulties in searching for lot traceability information due to paper-based records.

Searching for lot traceability information took a long time and required a lot of manpower due to the paper-based management sheets.

Storage location for management slips (long-term storage required)

After completion of the work, there was an obligation to store the management sheets in a designated location for a certain period, which led to a shortage of storage space and difficulties in securing storage locations.

The deciding factor for implementation

High durability of Smart Card

The high durability of the smart cards, which are battery-free and equipped with dust and waterproof capabilities, was highly praised, and the exceptional durability not found in other companies became a deciding factor.

Highly flexible display with visible RFID.

In addition to allowing arbitrary data to be written to the main memory, it can also represent lot numbers and quantities that were previously handwritten. Furthermore, the ability to display QR codes provided flexible expressiveness, which became the deciding factor for its implementation."

Impact after implementation

Reducing paper running costs

The approximately 180 management slips that were being printed daily were reduced, resulting in a decrease in the monthly running costs associated with printing.

Human errors in linking lots at each process were eliminated.

By automatically linking lot numbers with smart cards using a reader/writer, errors caused by misplacement of management sheets that used to occur in the past have been eliminated.

Lot traceability has become easier.

Since all lot number histories are centrally managed within the system, lot traceability can be easily performed in case of unexpected events, leading to standardized operations.