**Biometric Technologies (BT) are important multidisciplinary research areas targeted at automatic identity verification applications. Verification processes especially based on behaviour do not show 100 % verification due to some environmental and personal differences in BT. Signature imitation is one of the typical inverse problems of graphology. Thus, signature verification (SV) ,which has a special importance in BT is a widely studied area of research in the literature. Swarm intelligence and Neural Network is adapted for verification process. **Signature is highly preferable with respect to Collectability and Acceptability. Therefore the studies on signature verification have a great importance. Much progress has been performed in SV recent years. However a model based statistical approach is not available. **Questioned documents have been suspected of being deceitful or whose source has not been known. There may be a variety of reasons for questioning a document. “BIO-BOX” is represented with applications of the questioned document analysis.