<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Jun 15, 2017, at 7:32 PM, Grant Schultz <<a href="mailto:gschultz@kc.rr.com" class="">gschultz@kc.rr.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Besides pencil and paper, is there any sort of mechanism you can envision that would aid in en/decryption in conjunction with a one-time pad, where (with the plaintext and key hidden) you could then photograph the ciphertext (perhaps showing on wheels of some sort), and transmit the photograph. On the other end, the ciphertext could be manually entered into the recipient's device and decrypted. This would bypass the tedium of typing random letters into the smartphone.</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""></div></blockquote></div><br class=""><div class="">Visual Cryptography. </div></body></html>