Safety researchers Tekla S. Perry and Linda Geppert point out that shielding and other protections degrade with increasing age, cycles of use, and even some maintenance procedures, as is also true of the shielding in PEDs, including mobile phones.
安全研究员Tekla S. Perry和Linda Geppert指出，屏蔽及其他保护随着时间的增加，使用周期，甚至某些维护过程将会降解，也是真正的屏蔽个人电子设备，包括手机。