Share your contact details over VCard QR Code, format also known as VCF (Virtual Contact File) the standard for electronic business cards. vCards can be attached to e-mail messages or documents. This small QR Code image will keep all your contact information.
Learn more about VCard
ODT files are type of documents created with word processing applications that are based on OpenDocument Text File format. These are created with word processor applications such as free OpenOffice Writer and can hold content such as text, images, objects and styles. The ODT file is to Writer word processor what the DOCX is to Microsoft Word. Several applications including Google Docs and Google's web-based word processor included with Google Drive can open the ODT files for editing.
Read More
You can also sign other file formats. Please see the list below.