1. Because these dots are physical, the data is not affected by magnetic interference . 2. The geometry also cancels the magnetic interference between the two pairs. 3. There is a hell of a lot of magnetic interference in a coaxial cable. 4. However at radio frequencies nearby sources of magnetic interference are generally not an issue. 5. Ann-Marie Magne offers her own suggestion on the possible cause of the magnetic interference . 6. The system also saw some military use, due to its low sensitivity to magnetic interference . 7. Carrying the signals by fiber also means they aren't subject to electro-magnetic interference , CBL says. 8. No deaths have resulted from electro-magnetic interference with heart devices, said FDA spokeswoman Sharon Snider. 9. Compasses are also unreliable in areas prone to magnetic interference , such as sites being supported by scaffolding. 10. Most human electronics, such as radios, use vacuum tubes, which although less efficient are also more resistant to electro-magnetic interference .