Touch screen device for entering data using auditory signals

One or more non-transitory computer-readable media comprising computer-readable instructions stored thereon, that when executed by two or more processors of a device, including a secure processor and an applications processor, cause the two or more processors to:

• transmit, by the applications processor, an indication of a secure mode to the secure processor such that touch inputs received at a display are routed to the secure processor;
• cause, by the applications processor, a speaker associated with the device to serially recite a plurality of auditory cues in each cycle of a plurality of cycles, wherein each of the plurality of auditory cues corresponds to one of a set of characters;
• reset, by the applications processor, a first timer of the applications processor at a beginning of the each cycle;
• reset, by the secure processor, a second timer of the secure processor at the beginning of the each cycle, wherein each auditory cue of the plurality of auditory cues in the each cycle occurs at a predetermined time period relative to the beginning of the each cycle and the resetting of the first timer and the second timer;
• receive, by the secure processor, based on the touch inputs received at the display being routed to the secure processor in the secure mode, a touch input on the display from a user during the recitation of the plurality of auditory cues during a time relative to the resetting of the second timer corresponding to a predetermined time period associated with an auditory cue of the plurality of auditory cues;
• determine, by the secure processor, a character from the set of characters that corresponds to the touch input based on the time relative to the resetting of the second timer corresponding to the predetermined time period;
• and
• store, by the secure processor, the character as a value in a sequence of user-specific information.

A device comprising:

• a touch screen display;
• a speaker;
• and
• one or more non-transitory computer-readable media comprising computer-readable instructions stored thereon which, when executed by two or more processors of the device, including a secure processor and an applications processor, cause the two or more processors to:
• transmit, by the applications processor, an indication of a secure mode to the secure processor such that touch inputs received at the touch screen display are routed to the secure processor;
• cause, by the applications processor, the speaker to serially recite a plurality of auditory cues in each cycle of a plurality of cycles, wherein each of the plurality of auditory cues corresponds to one of a set of characters;
• reset, the applications processor, a first timer of the applications processor at a beginning of the each cycle;
• reset, by the secure processor, a second timer of the secure processor at the beginning of the each cycle, wherein each auditory cue of the plurality of auditory cues in the each cycle occurs at a predetermined time period relative to the beginning of the each cycle and the resetting of the first timer and the second timer;
• receive, by the secure processor, based on the touch inputs received at the display being routed to the secure processor in the secure mode, a touch input on the touch screen display from a user during the recitation of the plurality of auditory cues during a time relative to the resetting of the timer corresponding to a predetermined time period associated with an auditory cue of the plurality of auditory cues;
• determine, by the secure processor, a character from the set of characters that corresponds to the touch input based on the time relative to the resetting of the timer corresponding to the predetermined time period;
• and
• store, by the secure processor, the character as a value in a sequence of user-specific information.