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磁力显微镜（ＭＦＭ）是研究磁性材料表面磁结构的一种高新技术产品，具有极高的分辨率。利用磁力显微镜显形和分析录像磁带上的高密度磁信号图，是视听资料检验技术中的一个新思路和新方法。本文对这种检验技术进行了研讨和实验。实验证明该技术具有极高的准确度和灵敏度，在磁带录像资料原始性的刑事检验中有着重要的应用价值。
Magnetic Microscope (MFM) is a high-tech product that studies the magnetic structure of the surface of magnetic materials with extremely high resolution. The use of magnetic microscope microscopy and analysis of high-density magnetic tape on the video signal, audio-visual data inspection technology is a new idea and a new method. This article has carried on the discussion and the experiment to this inspection technology. Experiments show that the technology has high accuracy and sensitivity, and has an important application value in the original criminal test of video tapes.