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OneHandTouch (aka OHT) is a collection of devices that connect to smartphones and tablets via hardware+software(1) or only software(2) connection and make their back surface touch-sensitive, so that users can interact with their smartphones and tablets with only one hand, touching back on their devices while holding them.

The Invention addresses issues of having to work with smartphones and tablets using two hands, with one hand always active over the device screen to navigate contents and interact with touch-screen devices.

Instead of holding one hand over the screen and frequently using it to scroll, swipe, and perform gesture commands, users can gently use their fingers at the back of their smartphones and tablets to interact with them.

OneHandTouch collection includes 3 different electronic devices as follow:

  • OneHandTouch Cover
  • OneHandTouch Stick
  • OneHandTouch Bracelet

* Both OneHandTouch Cover and OneHandTouch Stick require hardware attachments on user’s smartphone/tablet while OneHandTouch Bracelet works based on remote connection to user’s devices. Note: Smartphone/Tablet will be referred to as “iDevice” in this document.

  1. Hardware+Software connection means that OHT should be attached to user’s smartphone/tablet, as well as establishing a software connection between them in order to function.
  2. Software connection means that OHT can function without any hardware attachment to user’s smartphone/ tablet and it can function via a software connection — i.e. Bluetooth/Wi-Fi connection — on user’s device.

Title of Invention:


Technical Field:

The invention relates to 3 different versions of a device, 2 of them attaching to user’s iDevice and 1 of them is worn as a bracelet on user’s wrist, all of which turn back surface of user’s iDevice into a fully-functional, touch-sensitive area, using which the user can interact with his/her iDevice using only his/her finger(s) of the same hand he/she holds the iDevice with — without any need to raise his/her other hand to interact with the iDevice.


With invention and commercialization of Smartphones — and subsequently Tablets, Touch- screens have almost become the main medium via which users can work and interact with their iDevices. No matter how smaller, thinner and more powerful iDevices have become, screens have stayed the same medium ever since. Besides advantages of using touch- screen devices, cons are not few. There’s one thing in common for all iDevice users: using these devices require two hands, and they require “active” two hands from users, and they require it frequently.

In order to use iDevices, a user usually needs to hold the iDevice with one hand while tapping on the screen with fingers on his/her other hand. To read a book or scroll a web page up and down, a user is frequently asked to raise his second hand and touch the screen up or down, left or right. For those users who do it with fingers belonging to the hand they’re holding the iDevice with, it is usually difficult to perform certain touch gestures due to growing size of screens, and particularly on tablets, that make it harder for users to hold them with one hand and perform tasks on them with the same hand.

These difficulties get even stronger when a user wants to play games, surf web pages, share activities on Social Networks, etc.

There are also users with the disability who cannot work with their two hands. Those users have difficulties working with their iDevices, and as a result, much of them can never use iDevices as other people use, or they should suffer pain or get special assistance to be able to use iDevices.

.On the other hand, iDevice manufacturers such as Apple, Samsung, Google, etc. have focused on improving their screens and have limited users’ field of physical activity to phone’s or tablet’s screen size. In an ever-going route without such an invention, the phone and tablet manufacturers will have to perform maneuvering on everything about screens including their sizes, thickness and quality, without providing users innovative, interesting methods to interact with their iDevices. Eye-tracking, hand hovering, and vocal commanding techniques previously used in some iDevices have almost failed getting popular attention and development, partly because they don’t propose reliable and easy solutions for users.

With OHT, users can enjoy using their iDevices using only hand and yet expecting to interact with their smartphones and tablets perfectly. OHT provides a very easy and reliable solution for both users and iDevice manufacturing industry with a totally new technique to expand their performance with their iDevices.

OneHandTouch Types Of Invention:

OneHandTouch is invented in 3 types: Cover, Stick, Bracelet. All 3 versions provide the same solution for users in different forms — enabling them to interact with their iDevices by just using the hand they’re holding the iDevice with.

.Summary Of Invention:

Summary of the invention is described for each of 3 OHT inventions:

- OHT Cover:

OHT Cover is an ordinary-look-alike cover — primarily for iPhones 5, 5s, 6, 6s, 6 Plus, 6s Plus, 7, 7 Plus — worn on an iPhone, covering it’s back and sides. The Cover is consisted of 3 layers: Plastic layer (outside), Graphite-based touch-sensitive grid layer (middle), Rubber layer (below).

Figure 1.1

Touch-Sensitive Cover, worn on the back of user’s smartphone. It covers the whole back of a smartphone/tablet.

The dark gray area shows the Touch-sensitive part of the Cover.

.Figure 1.2

Mid-layer: Graphite-based conductor, 300 dpi touch-sensitive grid.

Upper layer: Made of semi-flexible Plastic, finished and printed with high-quality cover designs. Designed to transfer pressure caused by user’s fingers to the Mid-layer, where they will be wirelessly sent to iPhone for analysis.

Rubber layer, made of flexible rubber to fit into iPhone’s back and be stable to low and high temperatures — approximately -10oC to 40oC.

The 3 layers of materials are compressed upon each other and form a one-layer-looking cover that is high-quality Plastic on the outside. The cover exterior is made of Plastic materials that make tapping and swiping fingers on them gentle and pleasant. Meanwhile, the finishing is processed in a way that the smartphone/tablet does not slip from one’s hand.


When user’s finger touches the Cover, the Mid-layer grid detects the coordination of touch pressure and transmit it to the built-in Bluetooth transmission chip, where retrieved data will be sent to the application installed on user’s iPhone.

Figure 1.3

Built-in Bluetooth Transmission Chip and the Battery.

For the battery, a 3.7 V, high-energy density battery that is 2.8 AH and 1 mm thick, will preserve the power and feed the entire grid and data transmission system.

Invisible charging cable inside the cover leads to a micro-USB port. Users can charge the cover using the cable provided with the product.