Patent ID: 9495536
Filing Date: 2016-11-15
CPC Classification: G06F,H04L

Claim Text:
1. A method of determining an input by an apparatus, the method comprising: displaying a plurality of predetermined areas and a plurality of indicators on a screen of the apparatus, wherein the indicators are displayed respectively within the plurality of predetermined areas and indicate a sequence of the plurality of predetermined areas; authenticating, by an authenticator, an electronic seal, when the electronic seal contacts or is within a predetermined range of the screen of the apparatus; determining an area stamped on the screen of the apparatus by the electronic seal and determining that the stamped area is valid when the stamped area is included in any one of the plurality of predetermined areas and is larger than a predetermined size; and displaying a predetermined indication on the predetermined area including the stamped area when the stamped area is valid, wherein the displayed predetermined indication covers all of the predetermined area.