Thailand’s Election Commission (EC) has moved to clarify controversy surrounding QR codes and barcodes printed on ballot papers, insisting the markings are designed solely to prevent fraud and cannot be used to identify how individuals voted. The statement follows concerns raised on Friday, February 13, 2026, by the Pheu Thai Party that such codes could compromise the constitutional principle of secret ballots. The issue has sparked public debate and prompted questions about the integrity of the February 8 poll.
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At a press conference on February 13 at 17:25, EC officials including Korrasit Charoen-in, Deputy Secretary-General, Sub Lt Pasakorn Siripakayaporn, Deputy Secretary-General, Kittipol Payakkhadejaphan, Director of the Information Technology Bureau, and Worapong Ananchareonkit, Director of the Election Support Bureau, addressed the matter. Worapong said the inclusion of barcodes and QR codes complies with EC Regulation No. 129, which authorises the Commission to add codes, symbols or text to ballot papers in special cases without prior notice to prevent forgery.
He explained that the primary purpose of the codes is to prevent counterfeit ballots and so-called “ballot inflation”. Additional undisclosed safeguards are also in place. The codes are used during printing to record data and track the number of ballots produced, ensuring there is no overprinting and to manage binding and packaging, with each booklet containing 20 ballots that can be checked for completeness.
The system also tracks distribution to responsible officials, such as polling station committees and district election officers. If a ballot is found outside the authorised process, the code can indicate which district it was assigned to, assisting investigations into suspected irregularities or the use of ballots from other constituencies. However, Worapong stressed that the codes do not link to voter identities and cannot reveal which candidate or party an individual selected.
He acknowledged that images of ballot stubs had circulated on social media and said barcodes can be scanned to identify the polling station. Because such ballots were still attached to their booklets, they remained under official responsibility and would be investigated. Nevertheless, he reiterated that even if a ballot image is published, it cannot be used to prove how any particular person voted.
Sub Lt Pasakorn said ballot stubs, marked ballots and voter lists are stored separately under strict security. He emphasised that ballots cast on February 8 cannot be traced to any individual voter. Counting is conducted publicly, with observers and party representatives present, and ballots are sorted into valid, invalid and “no vote” categories before secure storage.
Responding to questions about whether scanning a barcode that generates a unique number could allow cross-referencing with ballot stubs, Worapong said that while scanning may show a ballot number, it is practically impossible to determine an individual’s vote due to layered safeguards from voting through to final storage. Unauthorised opening of ballot boxes is a criminal offence.
Officials also clarified that three types of ballots were used in this election and referendum, requiring three printing houses due to time constraints. Security measures vary according to each printer’s technology. Although referendum ballots do not display QR codes or barcodes, Worapong said they have their own tracking systems, the details of which cannot be disclosed.
The EC noted that QR codes were also used in the 2023 constituency election. Ballots shared online fall into two categories: those still attached to booklets at polling stations and those photographed during counting. In either case, the voter is not responsible for publication and secrecy remains intact.
Anarin reported that the clarification comes after Pheu Thai warned that if barcodes could link ballots to signed stubs, it would breach constitutional guarantees of secret voting and could form grounds for legal action. The party has set up a task force to gather evidence and has indicated that any petition to nullify the election would need to proceed via the Ombudsman to the Constitutional Court.

Pictures courtesy of Amarin
Key Takeaways
• The EC says QR codes and barcodes are anti-fraud tools and cannot identify voters’ choices.
• Pheu Thai has questioned whether the system could undermine constitutional voting secrecy.
• Ballots, stubs and voter lists are stored separately under strict security procedures.
Adapted by ASEAN Now Amarin 14 Feb 2026
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