diff --git a/Makefile b/Makefile
index b31b7f261..278021d52 100644
--- a/Makefile
+++ b/Makefile
@@ -38,7 +38,7 @@ UBUNTUTOUCH_SDL_DIR:=$(UBUNTUTOUCH_DIR)/ubuntu-touch-sdl
 WIN32_DIR=$(PLATFORM_DIR)/win32
 
 # files to link from main directory
-INSTALL_FILES=reader.lua frontend resources defaults.lua datastorage.lua l10n \
+INSTALL_FILES=reader.lua frontend resources defaults.lua datastorage.lua l10n utils \
 		git-rev README.md COPYING
 
 # for gettext
diff --git a/reader.lua b/reader.lua
index c4a990c0f..f508f2852 100755
--- a/reader.lua
+++ b/reader.lua
@@ -112,7 +112,7 @@ if G_reader_settings:readSetting("night_mode") then
     Screen:toggleNightMode()
 end
 
--- restore kobo frontlight settings
+-- restore kobo frontlight settings and probe kobo touch coordinates
 if Device:isKobo() then
     local powerd = Device:getPowerDevice()
     if powerd and powerd.restore_settings then
@@ -121,6 +121,9 @@ if Device:isKobo() then
         powerd:setIntensityWithoutHW(intensity)
         -- powerd:setIntensity(intensity)
     end
+    if Device:getCodeName() == "trilogy" then
+        require("utils/kobo_touch_proble")
+    end
 end
 
 if ARGV[argidx] and ARGV[argidx] ~= "" then
diff --git a/resources/kobo-touch-probe.png b/resources/kobo-touch-probe.png
new file mode 100644
index 000000000..9d17da287
Binary files /dev/null and b/resources/kobo-touch-probe.png differ
diff --git a/utils/kobo_touch_proble.lua b/utils/kobo_touch_proble.lua
new file mode 100755
index 000000000..227883db5
--- /dev/null
+++ b/utils/kobo_touch_proble.lua
@@ -0,0 +1,97 @@
+-- touch probe utility
+-- usage: ./luajit util/kobo_touch_proble.lua
+
+require "defaults"
+package.path = "common/?.lua;rocks/share/lua/5.1/?.lua;frontend/?.lua;" .. package.path
+package.cpath = "common/?.so;common/?.dll;/usr/lib/lua/?.so;rocks/lib/lua/5.1/?.so;" .. package.cpath
+
+local DocSettings = require("docsettings")
+local _ = require("gettext")
+
+-- read settings and check for language override
+-- has to be done before requiring other files because
+-- they might call gettext on load
+G_reader_settings = DocSettings:open(".reader")
+local lang_locale = G_reader_settings:readSetting("language")
+if lang_locale then
+    _.changeLang(lang_locale)
+end
+local InputContainer = require("ui/widget/container/inputcontainer")
+local CenterContainer = require("ui/widget/container/centercontainer")
+local RightContainer = require("ui/widget/container/rightcontainer")
+local OverlapGroup = require("ui/widget/overlapgroup")
+local ImageWidget = require("ui/widget/imagewidget")
+local TextWidget = require("ui/widget/textwidget")
+local GestureRange = require("ui/gesturerange")
+local UIManager = require("ui/uimanager")
+local Blitbuffer = require("ffi/blitbuffer")
+local Geom = require("ui/geometry")
+local Device = require("device")
+local Screen = require("device").screen
+local Input = require("device").input
+local Font = require("ui/font")
+local DEBUG = require("dbg")
+--DEBUG:turnOn()
+
+local TouchProbe = InputContainer:new{
+}
+
+function TouchProbe:init()
+    self.ges_events = {
+        TapProbe = {
+            GestureRange:new{
+                ges = "tap",
+                range = Geom:new{
+                    x = 0, y = 0,
+                    w = Screen:getWidth(),
+                    h = Screen:getHeight(),
+                },
+            }
+        },
+    }
+    local image_widget = ImageWidget:new{
+        file = "resources/kobo-touch-probe.png",
+    }
+    self[1] = OverlapGroup:new{
+        dimen = Screen:getSize(),
+        CenterContainer:new{
+            dimen = Screen:getSize(),
+            TextWidget:new{
+                text = _("Tap the upper right corner"),
+                face = Font:getFace("cfont", 30),
+            },
+        },
+        RightContainer:new{
+            dimen = {
+                h = image_widget:getSize().h,
+                w = Screen:getSize().w,
+            },
+            image_widget,
+        },
+    }
+end
+
+function TouchProbe:onTapProbe(arg, ges)
+    --DEBUG("onTapProbe", ges)
+    local need_to_switch_xy = ges.pos.x < ges.pos.y
+    --DEBUG("Need to switch xy", need_to_switch_xy)
+    G_reader_settings:saveSetting("kobo_touch_switch_xy", need_to_switch_xy)
+    G_reader_settings:close()
+    if need_to_switch_xy then
+        Input:registerEventAdjustHook(Input.adjustTouchSwitchXY)
+    end
+    UIManager:quit()
+end
+
+-- if user has not set KOBO_TOUCH_MIRRORED yet
+if KOBO_TOUCH_MIRRORED == nil then
+    local switch_xy = G_reader_settings:readSetting("kobo_touch_switch_xy")
+    -- and has no probe before
+    if switch_xy == nil then
+        UIManager:show(TouchProbe:new{})
+        UIManager:run()
+    -- otherwise, we will use probed result
+    else
+        KOBO_TOUCH_MIRRORED = switch_xy
+    end
+end
diff --git a/utils/wtest.lua b/utils/wtest.lua
index dd44ecfbd..859295c18 100755
--- a/utils/wtest.lua
+++ b/utils/wtest.lua
@@ -3,8 +3,8 @@
 
 require "defaults"
 print(package.path)
-package.path = "?.lua;common/?.lua;frontend/?.lua"
-package.cpath = "?.so;common/?.so;/usr/lib/lua/?.so"
+package.path = "common/?.lua;rocks/share/lua/5.1/?.lua;frontend/?.lua;" .. package.path
+package.cpath = "common/?.so;common/?.dll;/usr/lib/lua/?.so;rocks/lib/lua/5.1/?.so;" .. package.cpath
 
 local DocSettings = require("docsettings")
 local _ = require("gettext")