This document summarizes the security features of the new 100 rupee currency note in India. It describes 16 key security features, including a see-through register with the denomination, watermarks of Mahatma Gandhi and the numeral 100, ascending size of numerals, a security thread that changes color, intaglio printing, latent images, micro letters, bleed lines, identification marks, the guarantee clause, and portraits of Gandhi. The new note is smaller in size than the old note, and contains enhanced security features to prevent counterfeiting.