Use Mobile Phone Internet to any wifi enabled device

Generally we know how to connect and use any 2G, 3G, 4G mobile data from mobile device to pc because when we purchase mobile device they also give us pc connectivity device and driver. But many of us don't know how to connect mobile phone data to other wifi phone, tablets and other game console.
now a days it has also a easy and zero cost solution by mean of Tethering.   "Tethering" is the use of your cell phone -- or other Internet-enabled mobile device -- as a modem for another device, usually a notebook or PDA. The connection is made either with a cable (USB or serial) or wirelessly through Wi-Fi.
 So to do  tethering  we need a small software called Joikuspot light. Joikuspot turns your mobile phone to a mobile wifi hotspot , allowing any wifi enabled device to connect to internet using your phone as a 3G modem over wifi. This software convert and broadcast your mobile 3G in to wifi.
                                                    Joikuspot light
1. This app create an ad-hoc network and does not create a hotspot in infrastructure mode (ie. there is no access point (AP) created).
- Most of the Android phones create infra mode network so this is different.
- It will not work where client device can connect only to AP example it does not work with Amazon Kindle and other such devices.
- This will work only where client device supports ad-hoc networks.

2. Only WEP encryption protocol is supported.
- WEP is completely broken and any key can be cracked within minutes. See http://en.wikipedia.org/wiki/Wired_Equivalent_Privacy
- To be really secure you need WPA2 encryption which this app does not support.

3. No setting to filter clients.
- Given WEP is equivalent to no security a way to restrict client access based on number of clients or mac-address is much desirable.