世界杯期间，工作人员常要求接住比赛用球的球迷立即将其扔回场内。根据国际足联（FIFA）的政策规定，接到球后必须立刻归还以维持比赛流程 [1]。尽管部分观众因高昂的观赛成本希望保留纪念品，例如英格兰球迷杰克·古德温表示他为此花光了买房的首付并认为应能留作纪念，但现场工作人员仍会执行回收指令 [1]。
本届世界杯使用的 Adidas Trionda 足球内部嵌有运动传感器 [1]。该设备以 500Hz 的频率向视频助理裁判系统发送实时数据，用于辅助越位判罚及判定进球有效性 [1]。佐治亚理工学院教授朱迪·雷迪指出，球的电子元件依赖体育场基础设施进行通信，一旦离开场馆几乎无法使用 [1]。
Fans at World Cup matches are required to immediately throw any ball they catch back into play upon request by stadium staff. This protocol stems from FIFA policy, which mandates that spectators return retrieved match balls instantly to maintain the flow of the game [1]. While some supporters wish to keep these items as souvenirs due to high ticket costs and viewing expenses—such as English fan Jack Goodwin, who spent his house down payment on tickets for this reason—they must comply with official regulations [1].
The specific ball used in this tournament is the Adidas Trionda. This match ball contains embedded 500Hz motion sensors that transmit real-time data to the Video Assistant Referee (VAR) system to assist with offside calls and determine goal validity [1]. Georgia Tech Professor Jud Ready explained that these electronic components rely on stadium infrastructure for communication, rendering them nearly useless once removed from the venue [1]. Consequently, staff must retrieve the ball immediately after it leaves play to ensure its sensors remain functional.