A Taoyuan city councillor says the metro's new phone charger rental machines run on Chinese-made telecom gear, raising security worries at a transport hub used by international travelers.

• The rental stations across 23 airport line stops use equipment listed as made by a Dongguan electronics firm in China.
• The machines carry 4G data modules, a type of product barred from government and public sites under Taiwan's cybersecurity law.
• Taoyuan Metro's own leasing contract bans vendors from using Chinese-brand IT and telecom products.
• The metro says the brand is a Taiwanese company but admits the certification paperwork names the Chinese manufacturer, and it is asking for more documents.
• Riders are also unhappy the new vendor dropped borrow-here-return-there service, leaving travelers stuck with chargers rented abroad.

Outlook: If the equipment is confirmed as Chinese-made, the metro is expected to fine the vendor or cancel the contract.