| 摘要 |
An electromagnetic signal transmitter for fraud prevention in a self-service terminal is described. The electromagnetic signal transmitter comprises a plurality of coil drives. The plurality of coil drives may include a first inductive coil drive comprising a first pair of opposing poles; and a second inductive coil drive comprising a second pair of opposing poles, where the second pair of opposing poles are offset from the first pair of opposing poles in at least two dimensions.
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