I can not find a way to recognize single letter by vuforia text recognition. I have tried manually putting individual letter on the wordlist. that does not work. From some forum I saw that vuforia does not support single letter detection. But that sounds unrealistic. Can someone give any possible workout? I have already tried the following: 1. Using each letter as a marker: The letters does not contain enough feature, so Vuforia cant detect it. 2. I have tried passing image from Vuforia API described here and tried detecting text using OCR plugin (I tested with both OpenCV and tesseract): The game becomes slow as the api keeps sending images to the OCR engine. Also the accuracy of those plugin is not as good as vuforia "Text Reco". Tesseract is good, but cant find a solution for android. Can anyone help me with some ideas please?